taiut1¶

erfa.taiut1(tai1, tai2, dta)[source]¶

Time scale transformation: International Atomic Time, TAI, to Universal Time, UT1.

Parameters:

tai1double array
tai2double array
dtadouble array

Returns:

ut11double array
ut12double array

Notes

Wraps ERFA function eraTaiut1. The ERFA documentation is:

- - - - - - - - - -
 e r a T a i u t 1
- - - - - - - - - -

Time scale transformation:  International Atomic Time, TAI, to
Universal Time, UT1.

Given:
   tai1,tai2  double    TAI as a 2-part Julian Date
   dta        double    UT1-TAI in seconds

Returned:
   ut11,ut12  double    UT1 as a 2-part Julian Date

Returned (function value):
              int       status:  0 = OK

Notes:

1) tai1+tai2 is Julian Date, apportioned in any convenient way
   between the two arguments, for example where tai1 is the Julian
   Day Number and tai2 is the fraction of a day.  The returned
   UT11,UT12 follow suit.

2) The argument dta, i.e. UT1-TAI, is an observed quantity, and is
   available from IERS tabulations.

Reference:

   Explanatory Supplement to the Astronomical Almanac,
   P. Kenneth Seidelmann (ed), University Science Books (1992)

This revision:  2021 May 11

Copyright (C) 2013-2023, NumFOCUS Foundation.
Derived, with permission, from the SOFA library.  See notes at end of file.

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taiut1¶