org.das2.datum.LeapSecondsConverter

TT2000 converter that takes leap seconds into account from us2000.

LeapSecondsConverter( boolean us2000ToTT2000 )

T1972_LEAP

convert

convert( double value ) → double

Parameters

value - a double

Returns:

double

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getInverse

getInverse( ) → UnitsConverter

Returns:

org.das2.datum.UnitsConverter

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getLeapSecondCountForTT2000

getLeapSecondCountForTT2000( long tt2000 ) → int

calculate the number of leap seconds in the tt2000 time. For example,

 
 print getLeapSecondCountForTT2000( Units.cdfTT2000.parse('1972-01-01T00:00Z').doubleValue(Units.cdfTT2000) ) # results in 10
 print getLeapSecondCountForTT2000( 0 )   # results in 32
 print getLeapSecondCountForTT2000( Units.cdfTT2000.parse('2017-01-01T00:00Z').doubleValue(Units.cdfTT2000) ) # results in 37

This is intended to replicate the table https://cdf.gsfc.nasa.gov/html/CDFLeapSeconds.txt

Parameters

tt2000 - the time in tt2000, which include the leap seconds.

Returns:

the number of leap seconds for the time.

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getLeapSecondCountForUs2000

getLeapSecondCountForUs2000( double us2000 ) → int

calculate the number of leap seconds in the us2000 time. For example,

 
 print getLeapSecondCountForUs2000( Units.us2000.parse('1972-01-01T00:00Z').doubleValue(Units.us2000) ) # results in 10
 print getLeapSecondCountForUs2000( Units.us2000.parse('2017-01-01T00:00Z').doubleValue(Units.us2000) ) # results in 37

This is intended to replicate the table https://cdf.gsfc.nasa.gov/html/CDFLeapSeconds.txt

Parameters

us2000 - the time in us2000, which include the leap seconds.

Returns:

the number of leap seconds for the time.

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