Skip to content

Latest commit

 

History

History
44 lines (32 loc) · 1017 Bytes

era.taiut1.md

File metadata and controls

44 lines (32 loc) · 1017 Bytes
Raw

eraTaiut1

[rv, ut11, ut12] = ERFA.taiut1(tai1, tai2, dta)

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) 2013-2021, NumFOCUS Foundation. Derived, with permission, from the SOFA library.