CDFTT2000

java.lang.Object
- gsfc.nssdc.cdf.util.CDFTT2000

All Implemented Interfaces:

CDFConstants
```
public class CDFTT2000
extends java.lang.Object
implements CDFConstants
```
This class contains the handy utility routines (methods) called by the CDF applications to handle epoch data of CDF's CDF_TIME_TT2000 data type.

Version:

1.0, 2.0 01/05/15 Add a new leap second for 2015/07/01., 3.0 10/20/16 Add a new leap second for 2016/01/01.

Field Summary
- Fields inherited from interface gsfc.nssdc.cdf.CDFConstants
  AHUFF_COMPRESSION, ALPHAOSF1_DECODING, ALPHAOSF1_ENCODING, ALPHAVMSd_DECODING, ALPHAVMSd_ENCODING, ALPHAVMSg_DECODING, ALPHAVMSg_ENCODING, ALPHAVMSi_DECODING, ALPHAVMSi_ENCODING, ARM_BIG_DECODING, ARM_BIG_ENCODING, ARM_LITTLE_DECODING, ARM_LITTLE_ENCODING, ATTR_, ATTR_EXISTENCE_, ATTR_EXISTS, ATTR_MAXgENTRY_, ATTR_MAXrENTRY_, ATTR_MAXzENTRY_, ATTR_NAME_, ATTR_NAME_TRUNC, ATTR_NUMBER_, ATTR_NUMgENTRIES_, ATTR_NUMrENTRIES_, ATTR_NUMzENTRIES_, ATTR_SCOPE_, BACKWARD_, BACKWARDFILEoff, BACKWARDFILEon, BAD_ALLOCATE_RECS, BAD_ARGUMENT, BAD_ATTR_NAME, BAD_ATTR_NUM, BAD_BLOCKING_FACTOR, BAD_CACHE_SIZE, BAD_CDF_EXTENSION, BAD_CDF_ID, BAD_CDF_NAME, BAD_CDFSTATUS, BAD_CHECKSUM, BAD_COMPRESSION_PARM, BAD_DATA_TYPE, BAD_DECODING, BAD_DIM_COUNT, BAD_DIM_INDEX, BAD_DIM_INTERVAL, BAD_DIM_SIZE, BAD_ENCODING, BAD_ENTRY_NUM, BAD_FNC_OR_ITEM, BAD_FORMAT, BAD_INITIAL_RECS, BAD_MAJORITY, BAD_MALLOC, BAD_NEGtoPOSfp0_MODE, BAD_NUM_DIMS, BAD_NUM_ELEMS, BAD_NUM_STRINGS, BAD_NUM_VARS, BAD_READONLY_MODE, BAD_REC_COUNT, BAD_REC_INTERVAL, BAD_REC_NUM, BAD_SCOPE, BAD_SCRATCH_DIR, BAD_SPARSEARRAYS_PARM, BAD_VAR_NAME, BAD_VAR_NUM, BAD_zMODE, BADDATE_LEAPSECOND_UPDATED, BeginUnixTimeEPOCH, BeginUnixTimeEPOCH16, BLOCKINGFACTOR_TOO_SMALL, BLOCKINGFACTOR_TOO_SMALL2, CANNOT_ALLOCATE_RECORDS, CANNOT_CHANGE, CANNOT_COMPRESS, CANNOT_COPY, CANNOT_INSERT_RECORDS, CANNOT_SPARSEARRAYS, CANNOT_SPARSERECORDS, CDF_, CDF_ACCESS_, CDF_ATTR_NAME_LEN, CDF_ATTR_NAME_LEN256, CDF_BYTE, CDF_CACHESIZE_, CDF_CHAR, CDF_CHECKSUM_, CDF_CLOSE_ERROR, CDF_COMPRESSION_, CDF_COPYRIGHT_, CDF_COPYRIGHT_LEN, CDF_CREATE_ERROR, CDF_DECODING_, CDF_DELETE_ERROR, CDF_DOUBLE, CDF_ENCODING_, CDF_EPOCH, CDF_EPOCH16, CDF_EXISTS, CDF_FLOAT, CDF_FORMAT_, CDF_INCREMENT_, CDF_INFO_, CDF_INT1, CDF_INT2, CDF_INT4, CDF_INT8, CDF_INTERNAL_ERROR, CDF_LEAPSECONDLASTUPDATED_, CDF_MAJORITY_, CDF_MAX_DIMS, CDF_MAX_PARMS, CDF_MIN_DIMS, CDF_NAME_, CDF_NAME_TRUNC, CDF_NEGtoPOSfp0_MODE_, CDF_NUMATTRS_, CDF_NUMgATTRS_, CDF_NUMrVARS_, CDF_NUMvATTRS_, CDF_NUMzVARS_, CDF_OK, CDF_OPEN_ERROR, CDF_PATHNAME_LEN, CDF_READ_ERROR, CDF_READONLY_MODE_, CDF_REAL4, CDF_REAL8, CDF_RELEASE_, CDF_SAVE_ERROR, CDF_SCRATCHDIR_, CDF_STATUS_, CDF_STATUSTEXT_LEN, CDF_TIME_TT2000, CDF_UCHAR, CDF_UINT1, CDF_UINT2, CDF_UINT4, CDF_VAR_NAME_LEN, CDF_VAR_NAME_LEN256, CDF_VERSION_, CDF_WARN, CDF_WRITE_ERROR, CDF_zMODE_, CDFwithSTATS_, CHECKSUM_, CHECKSUM_ERROR, CHECKSUM_NOT_ALLOWED, CLOSE_, COLUMN_MAJOR, COMPRESS_CACHESIZE_, COMPRESSION_ERROR, CONFIRM_, CORRUPTED_V2_CDF, CORRUPTED_V3_CDF, CREATE_, CURgENTRY_EXISTENCE_, CURrENTRY_EXISTENCE_, CURzENTRY_EXISTENCE_, DATATYPE_MISMATCH, DATATYPE_SIZE_, DECOMPRESSION_ERROR, DECSTATION_DECODING, DECSTATION_ENCODING, DEFAULT_BYTE_PADVALUE, DEFAULT_CHAR_PADVALUE, DEFAULT_DOUBLE_PADVALUE, DEFAULT_EPOCH_PADVALUE, DEFAULT_EPOCH16_PADVALUE, DEFAULT_FLOAT_PADVALUE, DEFAULT_INT1_PADVALUE, DEFAULT_INT2_PADVALUE, DEFAULT_INT4_PADVALUE, DEFAULT_INT8_PADVALUE, DEFAULT_REAL4_PADVALUE, DEFAULT_REAL8_PADVALUE, DEFAULT_TT2000_PADVALUE, DEFAULT_UCHAR_PADVALUE, DEFAULT_UINT1_PADVALUE, DEFAULT_UINT2_PADVALUE, DEFAULT_UINT4_PADVALUE, DELETE_, DID_NOT_COMPRESS, EMPTY_COMPRESSED_CDF, END_OF_VAR, EPOCH_STRING_LEN, EPOCH_STRING_LEN_EXTEND, EPOCH1_STRING_LEN, EPOCH1_STRING_LEN_EXTEND, EPOCH2_STRING_LEN, EPOCH2_STRING_LEN_EXTEND, EPOCH3_STRING_LEN, EPOCH3_STRING_LEN_EXTEND, EPOCH4_STRING_LEN, EPOCH4_STRING_LEN_EXTEND, EPOCHx_FORMAT_MAX, EPOCHx_STRING_MAX, FILLED_TT2000_VALUE, FORCED_PARAMETER, FUNCTION_NOT_SUPPORTED, gENTRY_, gENTRY_DATA_, gENTRY_DATASPEC_, gENTRY_DATATYPE_, gENTRY_EXISTENCE_, gENTRY_NUMELEMS_, GET_, GETCDFCHECKSUM_, GETCDFFILEBACKWARD_, GETCDFVALIDATE_, GETLEAPSECONDSENVVAR_, GLOBAL_SCOPE, GZIP_COMPRESSION, HOST_DECODING, HOST_ENCODING, HP_DECODING, HP_ENCODING, HUFF_COMPRESSION, IA64VMSd_DECODING, IA64VMSd_ENCODING, IA64VMSg_DECODING, IA64VMSg_ENCODING, IA64VMSi_DECODING, IA64VMSi_ENCODING, IBM_PC_OVERFLOW, IBMPC_DECODING, IBMPC_ENCODING, IBMRS_DECODING, IBMRS_ENCODING, ILLEGAL_EPOCH_FIELD, ILLEGAL_EPOCH_VALUE, ILLEGAL_FOR_SCOPE, ILLEGAL_IN_zMODE, ILLEGAL_ON_V1_CDF, ILLEGAL_TT2000_VALUE, IS_A_NETCDF, LIB_COPYRIGHT_, LIB_INCREMENT_, LIB_RELEASE_, LIB_subINCREMENT_, LIB_VERSION_, MAC_DECODING, MAC_ENCODING, MD5_CHECKSUM, MULTI_FILE, MULTI_FILE_FORMAT, NA_FOR_VARIABLE, NEGATIVE_FP_ZERO, NEGtoPOSfp0off, NEGtoPOSfp0on, NETWORK_DECODING, NETWORK_ENCODING, NeXT_DECODING, NeXT_ENCODING, NO_ATTR_SELECTED, NO_CDF_SELECTED, NO_CHECKSUM, NO_COMPRESSION, NO_DELETE_ACCESS, NO_ENTRY_SELECTED, NO_MORE_ACCESS, NO_PADVALUE_SPECIFIED, NO_SPARSEARRAYS, NO_SPARSERECORDS, NO_STATUS_SELECTED, NO_SUCH_ATTR, NO_SUCH_CDF, NO_SUCH_ENTRY, NO_SUCH_RECORD, NO_SUCH_VAR, NO_VAR_SELECTED, NO_VARS_IN_CDF, NO_WRITE_ACCESS, NONE_CHECKSUM, NOT_A_CDF, NOT_A_CDF_OR_NOT_SUPPORTED, NOVARY, NULL_, OPEN_, OPTIMAL_ENCODING_TREES, OTHER_CHECKSUM, PAD_SPARSERECORDS, PPC_DECODING, PPC_ENCODING, PRECEEDING_RECORDS_ALLOCATED, PREV_SPARSERECORDS, PUT_, READ_ONLY_DISTRIBUTION, READ_ONLY_MODE, READONLYoff, READONLYon, rENTRY_, rENTRY_DATA_, rENTRY_DATASPEC_, rENTRY_DATATYPE_, rENTRY_EXISTENCE_, rENTRY_NAME_, rENTRY_NUMELEMS_, rENTRY_NUMSTRINGS_, rENTRY_STRINGSDATA_, RLE_COMPRESSION, RLE_OF_ZEROs, ROW_MAJOR, rVAR_, rVAR_ALLOCATEBLOCK_, rVAR_ALLOCATEDFROM_, rVAR_ALLOCATEDTO_, rVAR_ALLOCATERECS_, rVAR_BLOCKINGFACTOR_, rVAR_CACHESIZE_, rVAR_COMPRESSION_, rVAR_DATA_, rVAR_DATASPEC_, rVAR_DATATYPE_, rVAR_DIMVARYS_, rVAR_EXISTENCE_, rVAR_HYPERDATA_, rVAR_INITIALRECS_, rVAR_MAXallocREC_, rVAR_MAXREC_, rVAR_NAME_, rVAR_nINDEXENTRIES_, rVAR_nINDEXLEVELS_, rVAR_nINDEXRECORDS_, rVAR_NUMallocRECS_, rVAR_NUMBER_, rVAR_NUMELEMS_, rVAR_NUMRECS_, rVAR_PADVALUE_, rVAR_RECORDS_, rVAR_RECORDS_RENUMBER_, rVAR_RECVARY_, rVAR_RESERVEPERCENT_, rVAR_SEQDATA_, rVAR_SEQPOS_, rVAR_SPARSEARRAYS_, rVAR_SPARSERECORDS_, rVARs_CACHESIZE_, rVARs_DIMCOUNTS_, rVARs_DIMINDICES_, rVARs_DIMINTERVALS_, rVARs_DIMSIZES_, rVARs_MAXREC_, rVARs_NUMDIMS_, rVARs_RECCOUNT_, rVARs_RECDATA_, rVARs_RECINTERVAL_, rVARs_RECNUMBER_, SAVE_, SCRATCH_CREATE_ERROR, SCRATCH_DELETE_ERROR, SCRATCH_READ_ERROR, SCRATCH_WRITE_ERROR, SELECT_, SGi_DECODING, SGi_ENCODING, SINGLE_FILE, SINGLE_FILE_FORMAT, SOME_ALREADY_ALLOCATED, STAGE_CACHESIZE_, STATUS_TEXT_, STRINGDELIMITER, SUN_DECODING, SUN_ENCODING, TOO_MANY_PARMS, TOO_MANY_VARS, TRY_TO_READ_NONSTRING_DATA, TT2000_0_STRING_LEN, TT2000_1_STRING_LEN, TT2000_2_STRING_LEN, TT2000_3_STRING_LEN, TT2000_4_STRING_LEN, TT2000_CDF_MAYNEEDUPDATE, TT2000_TIME_ERROR, TT2000_USED_OUTDATED_TABLE, UNABLE_TO_PROCESS_CDF, UNKNOWN_COMPRESSION, UNKNOWN_SPARSENESS, UNSUPPORTED_OPERATION, VALIDATE_, VALIDATEFILEoff, VALIDATEFILEon, VAR_ALREADY_CLOSED, VAR_CLOSE_ERROR, VAR_CREATE_ERROR, VAR_DELETE_ERROR, VAR_EXISTS, VAR_NAME_TRUNC, VAR_OPEN_ERROR, VAR_READ_ERROR, VAR_SAVE_ERROR, VAR_WRITE_ERROR, VARIABLE_SCOPE, VARY, VAX_DECODING, VAX_ENCODING, VIRTUAL_RECORD_DATA, zENTRY_, zENTRY_DATA_, zENTRY_DATASPEC_, zENTRY_DATATYPE_, zENTRY_EXISTENCE_, zENTRY_NAME_, zENTRY_NUMELEMS_, zENTRY_NUMSTRINGS_, zENTRY_STRINGSDATA_, ZLIB_COMPRESS_ERROR, ZLIB_UNCOMPRESS_ERROR, zMODEoff, zMODEon1, zMODEon2, zVAR_, zVAR_ALLOCATEBLOCK_, zVAR_ALLOCATEDFROM_, zVAR_ALLOCATEDTO_, zVAR_ALLOCATERECS_, zVAR_BLOCKINGFACTOR_, zVAR_CACHESIZE_, zVAR_COMPRESSION_, zVAR_DATA_, zVAR_DATASPEC_, zVAR_DATATYPE_, zVAR_DIMCOUNTS_, zVAR_DIMINDICES_, zVAR_DIMINTERVALS_, zVAR_DIMSIZES_, zVAR_DIMVARYS_, zVAR_EXISTENCE_, zVAR_HYPERDATA_, zVAR_INITIALRECS_, zVAR_MAXallocREC_, zVAR_MAXREC_, zVAR_NAME_, zVAR_nINDEXENTRIES_, zVAR_nINDEXLEVELS_, zVAR_nINDEXRECORDS_, zVAR_NUMallocRECS_, zVAR_NUMBER_, zVAR_NUMDIMS_, zVAR_NUMELEMS_, zVAR_NUMRECS_, zVAR_PADVALUE_, zVAR_RECCOUNT_, zVAR_RECINTERVAL_, zVAR_RECNUMBER_, zVAR_RECORDS_, zVAR_RECORDS_RENUMBER_, zVAR_RECVARY_, zVAR_RESERVEPERCENT_, zVAR_SEQDATA_, zVAR_SEQPOS_, zVAR_SPARSEARRAYS_, zVAR_SPARSERECORDS_, zVARs_CACHESIZE_, zVARs_MAXREC_, zVARs_RECDATA_, zVARs_RECNUMBER_

Constructor Summary

Constructors
Constructor and Description

CDFTT2000()

Constructors
Constructor and Description
`CDFTT2000()`

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method and Description
`static long[]`	`breakdown(long nanoSecSinceJ2000)` Breaks a TT2000 epoch value down into its full, UTC-based date/time component parts.
`static long[][]`	`breakdown(long[] nanoSecSinceJ2000)` Breaks an array of TT2000 epoch values down into two dimensional array, the first dimension being the count of the epoch values, and the second dimension being their full, UTC-based date/time component parts for each value.
`static long[]`	`breakdownTT2000(long nanoSecSinceJ2000)` Breaks a TT2000 epoch value down into its full, UTC-based date/time component parts - new name as toUTCparts.
`static long[]`	`breakdownTT2000withBasedLeapDay(long tt2000, int yymmdd)` breakdownTT2000withBasedLeapDay.
`static long[]`	`CDFgetLastDateinLeapSecondsTable()` /** This method returns the last UTC date that a leap second was added in the leap second table used in the class.
`static double[][]`	`CDFgetLeapSecondsTable()` This method returns the leap seconds table.
`static int`	`CDFgetLeapSecondsTableStatus()` This method returns the status code reflecting whether the leap seconds are from a external file, defined by an environment variable, or the leap seconds are based on the hard-coded table in the class.
`static int`	`CDFgetRowsinLeapSecondsTable()` This method returns the number of entries in the leap seconds table.
`static long[]`	`compute(long[] year, long[] month, long[] day)` Computes an array of TT2000 epochs, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long[]`	`compute(long[] year, long[] month, long[] day, long[] hour)` Computes an array of TT2000 epochs, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long[]`	`compute(long[] year, long[] month, long[] day, long[] hour, long[] minute)` Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
`static long[]`	`compute(long[] year, long[] month, long[] day, long[] hour, long[] minute, long[] second)` Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
`static long[]`	`compute(long[] year, long[] month, long[] day, long[] hour, long[] minute, long[] second, long[] msec)` Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
`static long[]`	`compute(long[] year, long[] month, long[] day, long[] hour, long[] minute, long[] second, long[] msec, long[] usec)` Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
`static long[]`	`compute(long[] year, long[] month, long[] day, long[] hour, long[] minute, long[] second, long[] msec, long[] usec, long[] nsec)` Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
`static long`	`compute(long year, long month, long day, long hour, long minute, long second, long msec, long usec, long nsec)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`computeTT2000(double year, double month, double day)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`computeTT2000(double year, double month, double day, double hour)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`computeTT2000(double year, double month, double day, double hour, double minute)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`computeTT2000(double year, double month, double day, double hour, double minute, double second)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`computeTT2000(double year, double month, double day, double hour, double minute, double second, double milsec)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`computeTT2000(double year, double month, double day, double hour, double minute, double second, double milsec, double micsec)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`computeTT2000(double year, double month, double day, double hour, double minute, double second, double msec, double usec, double nsec)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts - a new name from fromUTCparts.
`static long`	`computeTT2000withBasedLeapDay(double yy, double mm, double dd, double hh, double mn, double ss, double ms, double us, double ns, int yymmdd)` This method returns the TT2000 time in nanoseconds based on the last leap second day.
`static long`	`computeTT2000withBasedLeapDay(long yy, long mm, long dd, long hh, long mn, long ss, long ms, long us, long ns, int yymmdd)` This method returns the TT2000 time in nanoseconds based on the last leap second day.
`static java.lang.String`	`encode(long nanoSecSinceJ2000)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string in ISO 8601 style.
`static java.lang.String[]`	`encode(long[] nanoSecSinceJ2000)` Converts an array of epoch values in TT2000 type into an array of readable, UTC-based date/time strings in ISO 8601 style.
`static java.lang.String[]`	`encode(long[] nanoSecSinceJ2000, int style)` Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of chosen style.
`static java.lang.String`	`encode(long nanoSecSinceJ2000, int style)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
`static java.lang.String`	`encodeTT2000withBasedLeapDay(long tt2000, int yymmdd)` encodeTT2000withBasedLeapDay.
`static long`	`fromGregorianTime(java.util.GregorianCalendar gc)` This method converts the UTC-based date/time in a GregorianCalendar class object to TT2000 time.
`static long`	`fromUTCEPOCH(double epoch)` Convert an epoch value in CDF_EPOCH type to TT2000 type.
`static long`	`fromUTCEPOCH16(double[] epoch)` Convert an epoch data in CDF_EPOCH16 type to TT2000 type.
`static long[]`	`fromUTCISO8601string(java.lang.String string)` This method parses an input, UTC-based, date/time string in ISO 8601 and returns their date/time components.
`static long`	`fromUTCparts(double year, double month, double day)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`fromUTCparts(double year, double month, double day, double hour)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`fromUTCparts(double year, double month, double day, double hour, double minute)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`fromUTCparts(double year, double month, double day, double hour, double minute, double second)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`fromUTCparts(double year, double month, double day, double hour, double minute, double second, double milsec)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`fromUTCparts(double year, double month, double day, double hour, double minute, double second, double milsec, double micsec)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`fromUTCparts(double year, double month, double day, double hour, double minute, double second, double msec, double usec, double nsec)` Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
`static long`	`fromUTCstring(java.lang.String string)` This method parses an input, UTC-based, date/time string and returns a TT2000 epoch value, nanoseconds since J2000.
`static java.lang.String`	`getLeapSecondsTableEnvVar()` Find the environment variable "CDF_LEAPSECONDSTABLE" that is defined for the leap seconds table for CDF.
`static double`	`LeapSecondsfromYMD(long year, long month, long day)` Find the leap seconds from a given, UTC-based year/month/day.
`static long`	`parse(java.lang.String string)` This method parses an input date/time string and returns a TT2000 epoch value, nanoseconds since J2000.
`static long[]`	`parse(java.lang.String[] strings)` This method parses an array of input date/time strings and returns an array of TT2000 epoch values, nanoseconds since J2000.
`static long`	`parseTT2000(java.lang.String string)` This method parses an input, UTC-based, date/time string and returns a TT2000 epoch value, nanoseconds since J2000.
`static long[]`	`parseTT2000(java.lang.String[] strings)` This method parses an input, UTC-based, date/time strings and returns a TT2000 epoch value array, nanoseconds since J2000.
`static long`	`parseTT2000withBasedLeapDay(java.lang.String tt2000, int yymmdd)` parseTT2000withBasedLeapDay.
`static java.lang.String`	`toEncode(long nanoSecSinceJ2000)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of ISO8601 style (style 3).
`static java.lang.String[]`	`toEncode(long[] nanoSecSinceJ2000)` Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of ISO8601 style.
`static java.lang.String[]`	`toEncode(long[] nanoSecSinceJ2000, int style)` Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of chosen style.
`static java.lang.String`	`toEncode(long nanoSecSinceJ2000, int style)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
`static java.lang.String`	`toEncode(java.lang.Long nanoSecSinceJ2000, int style)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
`static java.util.GregorianCalendar`	`toGregorianTime(long tt2000)` This method converts the UTC-based date/time in TT2000 type to a GregorianCalendar class object in default, local time zone.
`static java.util.GregorianCalendar`	`toGregorianTime(long tt2000, java.util.TimeZone tz)` This method converts the UTC-based date/time in TT2000 type to a GregorianCalendar class object in specified time zone.
`static long`	`toParse(java.lang.String string)` This method parses an input, UTC-based, date/time string and returns a TT2000 epoch value, nanoseconds since J2000.
`static long[]`	`toParse(java.lang.String[] strings)` This method parses an input, UTC-based, date/time strings and returns a TT2000 epoch value array, nanoseconds since J2000.
`static double`	`toUTCEPOCH(long nanoSecSinceJ2000)` Convert an epoch value in TT2000 type to CDF_EPOCH type.
`static double`	`toUTCEPOCH16(long nanoSecSinceJ2000, double[] epoch)` Convert an epoch value in TT2000 type to CDF_EPOCH16 type.
`static long[]`	`toUTCparts(long nanoSecSinceJ2000)` Breaks a TT2000 epoch value down into its full, UTC-based date/time component parts.
`static java.lang.String`	`toUTCstring(long nanoSecSinceJ2000)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of ISO 8601 style.
`static java.lang.String`	`toUTCstring(java.lang.Long nanoSecSinceJ2000)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of ISO 8601 style.
`static java.lang.String[]`	`toUTCstring(long[] nanoSecSinceJ2000)` Converts an iarray of epoch values in TT2000 type into readable, UTC-based date/time strings of ISO 8601 style.
`static java.lang.String[]`	`toUTCstring(long[] nanoSecSinceJ2000, int style)` Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of chosen style.
`static java.lang.String`	`toUTCstring(long nanoSecSinceJ2000, int style)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
`static java.lang.String`	`toUTCstring(java.lang.Long nanoSecSinceJ2000, int style)` Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
`static double`	`TT2000toUnixTime(long epoch)` Converts a TT2000 value to a unix time of a double value (seconds from 1970-01-01 00:00:00 UTC).
`static double[]`	`TT2000toUnixTime(long[] epoch)` Converts an array of TT2000 values to an array of unix time of a double value (seconds from 1970-01-01 00:00:00 UTC).
`static long`	`UnixTimetoTT2000(double unixTime)` Converts a Unix time of a double value (seconds from 1970-01-01 00:00:00 UTC) to a TT2000 time.
`static long[]`	`UnixTimetoTT2000(double[] unixTimes)` Converts an array of Unix time of double values (seconds from 1970-01-01 00:00:00 UTC) to an array of TT2000 times.

Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CDFTT2000
```
public CDFTT2000()
```
- Method Detail
  - getLeapSecondsTableEnvVar
```
public static java.lang.String getLeapSecondsTableEnvVar()
```
    Find the environment variable "CDF_LEAPSECONDSTABLE" that is defined for the leap seconds table for CDF.
    
    Returns:
    
    the leap seconds environment variable if defined null if not.
  - LeapSecondsfromYMD
```
public static double LeapSecondsfromYMD(long year,
                                        long month,
                                        long day)
```
    Find the leap seconds from a given, UTC-based year/month/day.
    
    Parameters:
    
    year - the year
    
    month - the month
    
    day - the day
    
    Returns:
    
    the leap second value (TAI-UTC)
  - breakdownTT2000
```
public static long[] breakdownTT2000(long nanoSecSinceJ2000)
```
    Breaks a TT2000 epoch value down into its full, UTC-based date/time component parts - new name as toUTCparts.
    
    Parameters:
    
    nanoSecSinceJ2000 - the epoch value, in nanoseconds since J2000, to break down
    
    Returns:
    
    an array of long containing the epoch parts:
    
    Index Part
    
    0 year
    
    1 month
    
    2 day
    
    3 hour
    
    4 minute
    
    5 second
    
    6 millisecond
    
    7 microsecond
    
    8 nanosecond
  - toUTCparts
```
public static long[] toUTCparts(long nanoSecSinceJ2000)
```
    Breaks a TT2000 epoch value down into its full, UTC-based date/time component parts.
    
    Parameters:
    
    nanoSecSinceJ2000 - the epoch value, in nanoseconds since J2000, to break down
    
    Returns:
    
    an array of long containing the epoch parts:
    
    Index Part
    
    0 year
    
    1 month
    
    2 day
    
    3 hour
    
    4 minute
    
    5 second
    
    6 millisecond
    
    7 microsecond
    
    8 nanosecond
  - breakdown
```
public static long[] breakdown(long nanoSecSinceJ2000)
```
    Breaks a TT2000 epoch value down into its full, UTC-based date/time component parts.
    
    Parameters:
    
    nanoSecSinceJ2000 - the epoch value, in nanoseconds since J2000, to break down
    
    Returns:
    
    an array of long containing the epoch parts:
    
    Index Part
    
    0 year
    
    1 month
    
    2 day
    
    3 hour
    
    4 minute
    
    5 second
    
    6 millisecond
    
    7 microsecond
    
    8 nanosecond
  - breakdown
```
public static long[][] breakdown(long[] nanoSecSinceJ2000)
```
    Breaks an array of TT2000 epoch values down into two dimensional array, the first dimension being the count of the epoch values, and the second dimension being their full, UTC-based date/time component parts for each value.
    
    Parameters:
    
    nanoSecSinceJ2000 - an array of epoch values, in nanoseconds since J2000, to break down
    
    Returns:
    
    a 2-dim array of long, the first dimension being the value count while the second dimension containing the epoch parts, as follows:
    
    Index Part
    
    0 year
    
    1 month
    
    2 day
    
    3 hour
    
    4 minute
    
    5 second
    
    6 millisecond
    
    7 microsecond
    
    8 nanosecond
    
    or null if null or an empty input array is detected
  - computeTT2000
```
public static long computeTT2000(double year,
                                 double month,
                                 double day)
                          throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The day field can contain a fraction of a day - a new name from fromUTCparts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. It is in double
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCparts
```
public static long fromUTCparts(double year,
                                double month,
                                double day)
                         throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The day field can contain a fraction of a day.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. It is in double
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - computeTT2000
```
public static long computeTT2000(double year,
                                 double month,
                                 double day,
                                 double hour)
                          throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The hour field can contain a fraction of a hour - a new name from fromUTCparts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour in double Note: Avoid passing in the time component that extends into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCparts
```
public static long fromUTCparts(double year,
                                double month,
                                double day,
                                double hour)
                         throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The hour field can contain a fraction of a hour.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour in double Note: Avoid passing in the time component that extends into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - computeTT2000
```
public static long computeTT2000(double year,
                                 double month,
                                 double day,
                                 double hour,
                                 double minute)
                          throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The minute field can contain a fraction of a minute - a new name from fromUTCparts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCparts
```
public static long fromUTCparts(double year,
                                double month,
                                double day,
                                double hour,
                                double minute)
                         throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The minute field can contain a fraction of a minute.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - computeTT2000
```
public static long computeTT2000(double year,
                                 double month,
                                 double day,
                                 double hour,
                                 double minute,
                                 double second)
                          throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The second field can contain a fraction of a second - a new name from fromUTCparts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCparts
```
public static long fromUTCparts(double year,
                                double month,
                                double day,
                                double hour,
                                double minute,
                                double second)
                         throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The second field can contain a fraction of a second.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - computeTT2000
```
public static long computeTT2000(double year,
                                 double month,
                                 double day,
                                 double hour,
                                 double minute,
                                 double second,
                                 double milsec)
                          throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The millisecond field can contain a fraction of a millisecond - a new name from fromUTCparts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second, a full second in double
    
    milsec - the millisecond in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCparts
```
public static long fromUTCparts(double year,
                                double month,
                                double day,
                                double hour,
                                double minute,
                                double second,
                                double milsec)
                         throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The millisecond field can contain a fraction of a millisecond.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second, a full second in double
    
    milsec - the millisecond in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - computeTT2000
```
public static long computeTT2000(double year,
                                 double month,
                                 double day,
                                 double hour,
                                 double minute,
                                 double second,
                                 double milsec,
                                 double micsec)
                          throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The microsecond field can contain a fraction, which usually indicates the end of the parameter list - a new name from fromUTCparts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second, a full second in double
    
    milsec - the millisecond, a full millisecond in double
    
    micsec - the microsecond in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCparts
```
public static long fromUTCparts(double year,
                                double month,
                                double day,
                                double hour,
                                double minute,
                                double second,
                                double milsec,
                                double micsec)
                         throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts. The microsecond field can contain a fraction, which usually indicates the end of the parameter list.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second, a full second in double
    
    milsec - the millisecond, a full millisecond in double
    
    micsec - the microsecond in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - computeTT2000
```
public static long computeTT2000(double year,
                                 double month,
                                 double day,
                                 double hour,
                                 double minute,
                                 double second,
                                 double msec,
                                 double usec,
                                 double nsec)
                          throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts - a new name from fromUTCparts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1), otherwise an exception is thrown. A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second, a full second in double
    
    msec - the millisecond, a full millisecond in double
    
    usec - the microsecond, a full microsecond in double
    
    nsec - the nanosecond, a full nanosecond in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCparts
```
public static long fromUTCparts(double year,
                                double month,
                                double day,
                                double hour,
                                double minute,
                                double second,
                                double msec,
                                double usec,
                                double nsec)
                         throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
    
    Parameters:
    
    year - the year, a full year in double
    
    month - the month, a full month in double
    
    day - the day, either the day of the month or day of the year (DOY). For DOY, month has to be one (1). A full day in double
    
    hour - the hour, a full hour in double
    
    minute - the minute, a full minute in double
    
    second - the second, a full second in double
    
    msec - the millisecond, a full millisecond in double
    
    usec - the microsecond, a full microsecond in double
    
    nsec - the nanosecond, a full nanosecond in double Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long compute(long year,
                           long month,
                           long day,
                           long hour,
                           long minute,
                           long second,
                           long msec,
                           long usec,
                           long nsec)
                    throws CDFException
```
    Computes a TT2000 epoch, nanoseconds since J2000, based on its UTC-based date/time component parts.
    
    Parameters:
    
    year - the year, a full year in long
    
    month - the month, a full month in long
    
    day - the day, a full day in long
    
    hour - the hour, a full hour in long
    
    minute - the minute, a full minute in long
    
    second - the second, a full second in long
    
    msec - the millisecond, a full millisecond in long
    
    usec - the microsecond, a full microsecond in long
    
    nsec - the nanosecond, a full nanosecond in long Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long[] compute(long[] year,
                             long[] month,
                             long[] day)
                      throws CDFException
```
    Computes an array of TT2000 epochs, nanoseconds since J2000, based on its UTC-based date/time component parts.
    
    Parameters:
    
    year - an array of years, a full year in long
    
    month - an array of months, a full month in long
    
    day - an array of days, a full day in long
    
    Returns:
    
    the TT2000 epoch values in long or null if an invalid input array(s) is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long[] compute(long[] year,
                             long[] month,
                             long[] day,
                             long[] hour)
                      throws CDFException
```
    Computes an array of TT2000 epochs, nanoseconds since J2000, based on its UTC-based date/time component parts.
    
    Parameters:
    
    year - an array of years, a full year in long
    
    month - an array of months, a full month in long
    
    day - an array of days, a full day in long
    
    hour - an array of hours, a full hour in long Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long or null if an invalid input array(s) is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long[] compute(long[] year,
                             long[] month,
                             long[] day,
                             long[] hour,
                             long[] minute)
                      throws CDFException
```
    Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
    
    Parameters:
    
    year - an array of years, a full year in long
    
    month - an array of months, a full month in long
    
    day - an array of days, a full day in long
    
    hour - an array of hours, a full hour in long
    
    minute - an array of minutes, a full minute in long Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch values in long or null if an invalid input array(s) is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long[] compute(long[] year,
                             long[] month,
                             long[] day,
                             long[] hour,
                             long[] minute,
                             long[] second)
                      throws CDFException
```
    Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
    
    Parameters:
    
    year - an array of years, a full year in long
    
    month - an array of months, a full month in long
    
    day - an array of days, a full day in long
    
    hour - an array of hours, a full hour in long
    
    minute - an array of minutes, a full minute in long
    
    second - an array of seconds, a full second in long Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long or null if an invalid input array(s) is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long[] compute(long[] year,
                             long[] month,
                             long[] day,
                             long[] hour,
                             long[] minute,
                             long[] second,
                             long[] msec)
                      throws CDFException
```
    Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
    
    Parameters:
    
    year - an array of years, a full year in long
    
    month - an array of months, a full month in long
    
    day - an array of days, a full day in long
    
    hour - an array of hours, a full hour in long
    
    minute - an array of minutes, a full minute in long
    
    second - an array of seconds, a full second in long
    
    msec - an array of milliseconds, a full millisecond in long Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch values in long or null if an invalid input array(s) is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long[] compute(long[] year,
                             long[] month,
                             long[] day,
                             long[] hour,
                             long[] minute,
                             long[] second,
                             long[] msec,
                             long[] usec)
                      throws CDFException
```
    Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
    
    Parameters:
    
    year - an array of years, a full year in long
    
    month - an array of months, a full month in long
    
    day - an array of days, a full day in long
    
    hour - an array of hours, a full hour in long
    
    minute - an array of minutes, a full minute in long
    
    second - an array of seconds, a full second in long
    
    msec - an array of milliseconds, a full millisecond in long
    
    usec - an array of microseconds, a full microsecond in long Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch value in long or null if an invalid input array(s) is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - compute
```
public static long[] compute(long[] year,
                             long[] month,
                             long[] day,
                             long[] hour,
                             long[] minute,
                             long[] second,
                             long[] msec,
                             long[] usec,
                             long[] nsec)
                      throws CDFException
```
    Computes an array of TT2000 epochs, nanoseconds since J2000, based on its * UTC-based date/time component parts.
    
    Parameters:
    
    year - an array of years, a full year in long
    
    month - an array of months, a full month in long
    
    day - an array of days, a full day in long
    
    hour - an array of hours, a full hour in long
    
    minute - an array of minutes, a full minute in long
    
    second - an array of seconds, a full second in long
    
    msec - an array of milliseconds, a full millisecond in long
    
    usec - an array of microseconds, a full microsecond in long
    
    nsec - an array of nanoseconds, a full nanosecond in long Note: Avoid passing in the time components that extend into the next day as that could present a potential problem.
    
    Returns:
    
    the TT2000 epoch values in long or null if an invalid input array(s) is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - toUTCEPOCH
```
public static double toUTCEPOCH(long nanoSecSinceJ2000)
                         throws CDFException
```
    Convert an epoch value in TT2000 type to CDF_EPOCH type.
    
    Parameters:
    
    nanoSecSinceJ2000 - the nanoseconds since J2000
    
    Returns:
    
    the epoch value
    
    Throws:
    
    CDFException - an ILLEGAL_EPOCH_FIELD if an illegal component value is detected.
  - fromUTCEPOCH
```
public static long fromUTCEPOCH(double epoch)
                         throws CDFException
```
    Convert an epoch value in CDF_EPOCH type to TT2000 type. Reset the predefined CDF_EPOCH value of -1.0E31, -1.0E-31, or the default 0.0 or -0.0 (all are invalid for TT2000) to 0.
    
    Parameters:
    
    epoch - the CDF_EPOCH value
    
    Returns:
    
    the TT2000 epoch in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if date is out of the valid range for TT2000.
  - toUTCEPOCH16
```
public static double toUTCEPOCH16(long nanoSecSinceJ2000,
                                  double[] epoch)
                           throws CDFException
```
    Convert an epoch value in TT2000 type to CDF_EPOCH16 type.
    
    Parameters:
    
    nanoSecSinceJ2000 - the nanoseconds since J2000
    
    epoch - the returned CDF_EPOCH16 value, a double[2] object
    
    Returns:
    
    the status
    
    Throws:
    
    CDFException - an ILLEGAL_EPOCH_FIELD if an illegal component value is detected.
  - fromUTCEPOCH16
```
public static long fromUTCEPOCH16(double[] epoch)
                           throws CDFException
```
    Convert an epoch data in CDF_EPOCH16 type to TT2000 type. Reset the predefined CDF_EPOCH value of -1.0E31, -1.0E-31, or the default 0.0 or -0.0 (all are invalid for TT2000) to 0.
    
    Parameters:
    
    epoch - the CDF_EPOCH16 value, a double[2] object
    
    Returns:
    
    the TT2000 epoch in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if date is out of the valid range for TT2000.
  - toUTCstring
```
public static java.lang.String toUTCstring(java.lang.Long nanoSecSinceJ2000)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of ISO 8601 style.
```
            yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
```
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in Long object
    
    Returns:
    
    A string representation of the epoch in ISO 8601
  - toUTCstring
```
public static java.lang.String toUTCstring(long nanoSecSinceJ2000)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of ISO 8601 style.
```
            yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
```
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in long
    
    Returns:
    
    A string representation of the epoch
  - toUTCstring
```
public static java.lang.String[] toUTCstring(long[] nanoSecSinceJ2000)
```
    Converts an iarray of epoch values in TT2000 type into readable, UTC-based date/time strings of ISO 8601 style.
```
            yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
```
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch values, nanoseconds since J2000, in long
    
    Returns:
    
    A string array representation of the epochs
  - toUTCstring
```
public static java.lang.String toUTCstring(java.lang.Long nanoSecSinceJ2000,
                                           int style)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in Long object
    
    style - the style (from 0 to 4, 3 being the default), an optional
    
    Returns:
    
    A string representation of the epoch
  - toEncode
```
public static java.lang.String toEncode(java.lang.Long nanoSecSinceJ2000,
                                        int style)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in Long object
    
    style - the style (from 0 to 4, 3 being the default), an optional
    
    Returns:
    
    A string representation of the epoch
  - toEncode
```
public static java.lang.String toEncode(long nanoSecSinceJ2000,
                                        int style)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in long
    
    style - the style (from 0 to 4, 3 being the default), an optional
    
    Returns:
    
    A string representation of the epoch
  - toEncode
```
public static java.lang.String toEncode(long nanoSecSinceJ2000)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of ISO8601 style (style 3).
```
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
```
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in long
    
    Returns:
    
    A string representation of the epoch
  - toEncode
```
public static java.lang.String[] toEncode(long[] nanoSecSinceJ2000)
```
    Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of ISO8601 style.
```
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
```
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch values, nanoseconds since J2000, in long
    
    Returns:
    
    A string array representation of the epochs
  - toEncode
```
public static java.lang.String[] toEncode(long[] nanoSecSinceJ2000,
                                          int style)
```
    Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch values, nanoseconds since J2000, in long
    
    style - the style (from 0 to 4, 3 being the default), an optional
    
    Returns:
    
    A string array representation of the epoch
  - toUTCstring
```
public static java.lang.String toUTCstring(long nanoSecSinceJ2000,
                                           int style)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in long
    
    style - the style (from 0 to 4, 3 being the default), an optional
    
    Returns:
    
    A string representation of the epoch
  - toUTCstring
```
public static java.lang.String[] toUTCstring(long[] nanoSecSinceJ2000,
                                             int style)
```
    Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch values, nanoseconds since J2000, in long
    
    style - the style (from 0 to 3, as the default), an optional
    
    Returns:
    
    A string array representation of the epochs
  - encode
```
public static java.lang.String[] encode(long[] nanoSecSinceJ2000,
                                        int style)
```
    Converts an array of epoch values in TT2000 type into readable, UTC-based date/time strings of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch values, nanoseconds since J2000, in long
    
    style - the style (from 0 to 3, as the default), an optional
    
    Returns:
    
    A string array representation of the epochs
  - encode
```
public static java.lang.String encode(long nanoSecSinceJ2000)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string in ISO 8601 style.
```
            yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
```
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in long
    
    Returns:
    
    A string representation of the epoch
  - encode
```
public static java.lang.String[] encode(long[] nanoSecSinceJ2000)
```
    Converts an array of epoch values in TT2000 type into an array of readable, UTC-based date/time strings in ISO 8601 style.
```
            yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
```
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in long
    
    Returns:
    
    strings representing the epochs or null if null or an empty input array is detected
  - encode
```
public static java.lang.String encode(long nanoSecSinceJ2000,
                                      int style)
```
    Converts an epoch value in TT2000 type into a readable, UTC-based date/time string of chosen style.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 This is the default, ISO 8601, output.

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those expected by fromUTCstring.
    Parameters:
    
    nanoSecSinceJ2000 - the TT2000 epoch value, nanoseconds since J2000, in long
    
    style - the style (from 0 to 3, as the default), an optional
    
    Returns:
    
    A string representation of the epoch
  - parseTT2000
```
public static long parseTT2000(java.lang.String string)
                        throws CDFException
```
    This method parses an input, UTC-based, date/time string and returns a TT2000 epoch value, nanoseconds since J2000. The string must be in one of the styles as shown below. Month abbreviations may be in any case and are always the first three letters of the month - a new name from fromUTCstring.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549
 
 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those created by toUTCstring.
    Parameters:
    
    string - the epoch in string representation
    
    Returns:
    
    A TT2000 epoch the epoch value in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - toParse
```
public static long toParse(java.lang.String string)
                    throws CDFException
```
    This method parses an input, UTC-based, date/time string and returns a TT2000 epoch value, nanoseconds since J2000. The string must be in one of the styles as shown below. Month abbreviations may be in any case and are always the first three letters of the month - a new name from fromUTCstring.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549
 
 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those created by toUTCstring.
    Parameters:
    
    string - the epoch in string representation
    
    Returns:
    
    A TT2000 epoch the epoch value in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - parseTT2000
```
public static long[] parseTT2000(java.lang.String[] strings)
                          throws CDFException
```
    This method parses an input, UTC-based, date/time strings and returns a TT2000 epoch value array, nanoseconds since J2000. The string must be in one of the styles as shown below. Month abbreviations may be in any case and are always the first three letters of the month - a new name from fromUTCstring.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549
 
 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those created by toUTCstring.
    Parameters:
    
    strings - the epoch array in string representation
    
    Returns:
    
    A TT2000 epoch the epoch values in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - toParse
```
public static long[] toParse(java.lang.String[] strings)
                      throws CDFException
```
    This method parses an input, UTC-based, date/time strings and returns a TT2000 epoch value array, nanoseconds since J2000. The string must be in one of the styles as shown below. Month abbreviations may be in any case and are always the first three letters of the month - a new name from fromUTCstring.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549
 
 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those created by toUTCstring.
    Parameters:
    
    strings - the epoch array in string representation
    
    Returns:
    
    A TT2000 epoch the epoch values in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCstring
```
public static long fromUTCstring(java.lang.String string)
                          throws CDFException
```
    This method parses an input, UTC-based, date/time string and returns a TT2000 epoch value, nanoseconds since J2000. The string must be in one of the styles as shown below. Month abbreviations may be in any case and are always the first three letters of the month.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549
 
 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those created by toUTCstring.
    Parameters:
    
    string - the epoch in string representation
    
    Returns:
    
    A TT2000 epoch the epoch value in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - fromUTCISO8601string
```
public static long[] fromUTCISO8601string(java.lang.String string)
                                   throws CDFException
```
    This method parses an input, UTC-based, date/time string in ISO 8601 and returns their date/time components. String has to be in ISO 8601 form: yyyy-mm-ddThh:mm:ss.ccccccccc 1990-04-01T03:05:02.000000000 1993-10-10T23:45:49.777888999
    
    Parameters:
    
    string - the epoch in string representation
    
    Returns:
    
    UTC date/time components
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - parse
```
public static long parse(java.lang.String string)
                  throws CDFException
```
    This method parses an input date/time string and returns a TT2000 epoch value, nanoseconds since J2000. The string must be in one of the styles as shown below. Month abbreviations may be in any case and are always the first three letters of the month.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549

 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999

 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those created by toUTCstring.
    Parameters:
    
    string - the epoch in string representation
    
    Returns:
    
    A TT2000 epoch the epoch value in nanoseconds since J2000
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - parse
```
public static long[] parse(java.lang.String[] strings)
                    throws CDFException
```
    This method parses an array of input date/time strings and returns an array of TT2000 epoch values, nanoseconds since J2000. The string must be in one of the styles as shown below. Month abbreviations may be in any case and are always the first three letters of the month.
```
 Style:0    dd-mmm-yyyy hh:mm:ss.ccccccccc
 Examples:  01-Apr-1990 03:05:02.000000000
            10-Oct-1993 23:45:49.777888999

 Style:1    yyyymmdd.cccccccccc
 Examples:  19900401.1234567890
            19931010.9998887776

 Style:2    yyyymmddhhmmss
 Examples:  19900401030502
            19931010234549
 
 Style:3    yyyy-mm-ddThh:mm:ss.ccccccccc
 Examples:  1990-04-01T03:05:02.000000000
            1993-10-10T23:45:49.777888999
 
 Style:4    yyyy-mm-ddThh:mm:ss.cccccccccZ
 Examples:  1990-04-01T03:05:02.000000000Z
            1993-10-10T23:45:49.777888999Z
 
```
    These styles are the same as those created by toUTCstring.
    Parameters:
    
    strings - an array of epochs in string representation
    
    Returns:
    
    TT2000 epoch values in nanoseconds since J2000 or null if null or an empty input array is detected
    
    Throws:
    
    CDFException - an TT2000_TIME_ERROR if an illegal component value is detected.
  - CDFgetLastDateinLeapSecondsTable
```
public static long[] CDFgetLastDateinLeapSecondsTable()
```
    /** This method returns the last UTC date that a leap second was added in the leap second table used in the class. This can be used to check whether the table is up-to-date.
    
    Returns:
    
    the date (year, month, day) in a long array
  - fromGregorianTime
```
public static long fromGregorianTime(java.util.GregorianCalendar gc)
```
    This method converts the UTC-based date/time in a GregorianCalendar class object to TT2000 time.
    
    Parameters:
    
    gc - the Gregorian calendar object
    
    Returns:
    
    the TT2000 time
  - toGregorianTime
```
public static java.util.GregorianCalendar toGregorianTime(long tt2000)
```
    This method converts the UTC-based date/time in TT2000 type to a GregorianCalendar class object in default, local time zone.
    
    Parameters:
    
    tt2000 - the TT2000 data value
    
    Returns:
    
    a GregorianCalendar object
  - toGregorianTime
```
public static java.util.GregorianCalendar toGregorianTime(long tt2000,
                                                          java.util.TimeZone tz)
```
    This method converts the UTC-based date/time in TT2000 type to a GregorianCalendar class object in specified time zone.
    
    Parameters:
    
    tt2000 - the TT2000 data value
    
    tz - the time zone
    
    Returns:
    
    a GregorianCalendar object
  - CDFgetLeapSecondsTableStatus
```
public static int CDFgetLeapSecondsTableStatus()
```
    This method returns the status code reflecting whether the leap seconds are from a external file, defined by an environment variable, or the leap seconds are based on the hard-coded table in the class.
    
    Returns:
    
    status 1 if form a file, 0 hard-coded
  - CDFgetLeapSecondsTable
```
public static double[][] CDFgetLeapSecondsTable()
```
    This method returns the leap seconds table.
    
    Returns:
    
    table The table contents of the leap seconds
  - CDFgetRowsinLeapSecondsTable
```
public static int CDFgetRowsinLeapSecondsTable()
```
    This method returns the number of entries in the leap seconds table.
    
    Returns:
    
    enrtyCnt The entry count in the leap seconds table
  - computeTT2000withBasedLeapDay
```
public static long computeTT2000withBasedLeapDay(long yy,
                                                 long mm,
                                                 long dd,
                                                 long hh,
                                                 long mn,
                                                 long ss,
                                                 long ms,
                                                 long us,
                                                 long ns,
                                                 int yymmdd)
```
    This method returns the TT2000 time in nanoseconds based on the last leap second day.
    
    Parameters:
    
    yy - the year, a full year in long
    
    mm - the month, a full month in long
    
    dd - the day, a full day in long
    
    hh - the hour, a full hour in long
    
    mn - the minute, a full minute in long
    
    ss - the second, a full second in long
    
    ms - the millisecond, a full millisecond in long
    
    us - the microsecond, a full microsecond in long
    
    ns - the nanosecond, a full nanosecond in long
    
    yymmdd - the last leap second day (in YYYYMMDD) the UTC date is based upon, an int value
    
    Returns:
    
    TT2000 time in nanoseconds
  - computeTT2000withBasedLeapDay
```
public static long computeTT2000withBasedLeapDay(double yy,
                                                 double mm,
                                                 double dd,
                                                 double hh,
                                                 double mn,
                                                 double ss,
                                                 double ms,
                                                 double us,
                                                 double ns,
                                                 int yymmdd)
```
    This method returns the TT2000 time in nanoseconds based on the last leap second day. This function works similarly to fromUTCparts, with an adjustment if necessary. It returns the TT2000 from UTC date/time based on the passed last leap second day, while fromUTCparts function returns based on the day from the last entry in the current leap second table (LST). If the based leap second day is not a zero (0) or if the UTC date/time is extended over the next leap second day in the LST, one second(s) will be adjusted (deduction), due to the newly added leap second(s) in the LST. Otherwise, it returns the same value as fromUTCparts.
    
    Parameters:
    
    yy - the year, a full year in double
    
    mm - the month, a full month in double
    
    dd - the day, a full day in double
    
    hh - the hour, a full hour in double
    
    mn - the minute, a full minute in double
    
    ss - the second, a full second in double
    
    ms - the millisecond, a full millisecond in double
    
    us - the microsecond, a full microsecond in double
    
    ns - the nanosecond, a full nanosecond in double
    
    yymmdd - the last leap second day (in YYYYMMDD) the UTC date is based upon, an int value
    
    Returns:
    
    TT2000 time in nanoseconds
  - breakdownTT2000withBasedLeapDay
```
public static long[] breakdownTT2000withBasedLeapDay(long tt2000,
                                                     int yymmdd)
```
    breakdownTT2000withBasedLeapDay. This method is similar to toUTCparts (aka breakdown), with an adjustment if necessary. It returns UTC date/time from TT2000 value based on the passed last leap second day, while toUTCparts method is based on the last leap second updated day in the current leap second table (LST). If the based leap second day is zero (0), this method functions just like toUTCparts. If the TT2000 value was computed based on the LST that was not up-to-date, one second(s) adjustment (addition) might be necessay if its value crosses over the next new leap second day in the LST.
    
    Parameters:
    
    tt2000 - the nanoseconds since J2000
    
    yymmdd - the last leap second day (in YYYYMMDD) the UTC date is based upon, an int value
    
    Returns:
    
    TT2000 time in nanoseconds
  - encodeTT2000withBasedLeapDay
```
public static java.lang.String encodeTT2000withBasedLeapDay(long tt2000,
                                                            int yymmdd)
```
    encodeTT2000withBasedLeapDay. This method is similar to toUTCstring (aka encodeTT2000), with an adjustment if necessary. It encodes TT2000 to UTC string in ISO 8601 form based on the passed last leap second day, while toUTC_string method is based on the last leap second updated day in the current leap second table (LST). If the based leap second day is zero (0), this method functions just like toUTCstring. If the TT2000 value was computed based on the LST that was not up-to-date, one second(s) adjustment (addition) might be necessay if its value crosses over the next new leap second day in the LST.
    
    Parameters:
    
    tt2000 - the nanoseconds since J2000 with leap seconds second day
    
    yymmdd - the last leap second day (in YYYYMMDD) the UTC date is based upon, an int value
    
    Returns:
    
    TT2000 an ISO 8601 UTC string
  - parseTT2000withBasedLeapDay
```
public static long parseTT2000withBasedLeapDay(java.lang.String tt2000,
                                               int yymmdd)
```
    parseTT2000withBasedLeapDay. This method is similar to fromUTCstring (aka parseTT2000), with an adjustment if necessary. It returns a TT2000 value from the UTC string in ISO 8601 form based on the passed last leap second day, while fromUTCstring method is based on the last leap second updated day in the current leap second table (LST). If the based leap second day is zero (0), this method functions just like fromUTCstring. If the UTC string was encoded based on the LST that was not up-to-date, one second(s) adjustment (addition) might be necessary if its day crosses over the next new leap second day in the LST.
    
    Parameters:
    
    tt2000 - the UTC string (in ISO 8601 form) based on the last leap second day
    
    yymmdd - the last leap second day (in YYYYMMDD) the UTC date is based upon, an int value
    
    Returns:
    
    TT2000 time in nanoseconds
  - TT2000toUnixTime
```
public static double TT2000toUnixTime(long epoch)
```
    Converts a TT2000 value to a unix time of a double value (seconds from 1970-01-01 00:00:00 UTC). The unix time will have a time resolution of microseconds at its fraction part. Note: As unix time does not have leap seconds, the converted time might not be properly presented. Also, TT2000 have a higher time resolution than the unix time. The conversion might not precisely preserve the microseconds due to the floating point presentation.
    
    Parameters:
    
    epoch - the epoch value
    
    Returns:
    
    A unix time value
  - TT2000toUnixTime
```
public static double[] TT2000toUnixTime(long[] epoch)
```
    Converts an array of TT2000 values to an array of unix time of a double value (seconds from 1970-01-01 00:00:00 UTC). The unix time will have a time resolution of microseconds at its fraction part. Note: As unix time does not have leap seconds, the converted time might not be properly presented. Also, TT2000 have a higher time resolution than the unix time. The conversion might not precisely preserve the microseconds due to the floating point presentation.
    
    Parameters:
    
    epoch - the epoch values
    
    Returns:
    
    Array of unix time values
  - UnixTimetoTT2000
```
public static long UnixTimetoTT2000(double unixTime)
```
    Converts a Unix time of a double value (seconds from 1970-01-01 00:00:00 UTC) to a TT2000 time. The unix time can have a time resolution of milliseconds or microseconds at its fraction part. Note: As unix time does not have leap seconds, the converted time might not be properly presented. Also, TT2000 have a higher time resolution than the unix time. The conversion might not precisely preserve the microseconds due to the floating point presentation.
    
    Parameters:
    
    unixTime - the unix time value
    
    Returns:
    
    An TT2000 value
  - UnixTimetoTT2000
```
public static long[] UnixTimetoTT2000(double[] unixTimes)
```
    Converts an array of Unix time of double values (seconds from 1970-01-01 00:00:00 UTC) to an array of TT2000 times. The unix time can have a time resolution of milliseconds or microseconds at its fraction part. Note: As unix time does not have leap seconds, the converted time might not be properly presented. Also, TT2000 may have a higher time resolution than the unix time. The conversion might not precisely preserve the microseconds due to the floating point presentation.
    
    Parameters:
    
    unixTimes - the unix time values
    
    Returns:
    
    An array of TT2000 values

Index	Part
0	year
1	month
2	day
3	hour
4	minute
5	second
6	millisecond
7	microsecond
8	nanosecond

Class CDFTT2000

Field Summary

Fields inherited from interface gsfc.nssdc.cdf.CDFConstants

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

CDFTT2000

Method Detail

getLeapSecondsTableEnvVar

LeapSecondsfromYMD

breakdownTT2000

toUTCparts

breakdown

breakdown

computeTT2000

fromUTCparts

computeTT2000

fromUTCparts

computeTT2000

fromUTCparts

computeTT2000

fromUTCparts

computeTT2000

fromUTCparts

computeTT2000

fromUTCparts

computeTT2000

fromUTCparts

compute

compute

compute

compute

compute

compute

compute

compute

toUTCEPOCH

fromUTCEPOCH

toUTCEPOCH16

fromUTCEPOCH16

toUTCstring

toUTCstring

toUTCstring

toUTCstring

toEncode

toEncode

toEncode

toEncode

toEncode

toUTCstring

toUTCstring

encode

encode

encode

encode

parseTT2000

toParse

parseTT2000

toParse

fromUTCstring

fromUTCISO8601string

parse

parse

CDFgetLastDateinLeapSecondsTable

fromGregorianTime

toGregorianTime

toGregorianTime

CDFgetLeapSecondsTableStatus

CDFgetLeapSecondsTable

CDFgetRowsinLeapSecondsTable

computeTT2000withBasedLeapDay

computeTT2000withBasedLeapDay

breakdownTT2000withBasedLeapDay

encodeTT2000withBasedLeapDay

parseTT2000withBasedLeapDay

TT2000toUnixTime

TT2000toUnixTime

UnixTimetoTT2000

UnixTimetoTT2000