Gerard Ashton <[email protected]> wrote: > For example, the Standards of Fundamental Astronomy subroutine iauDat > provides the delta between TAI and UTC, and the source code comments say > "UTC began at 1960 January 1.0 (JD 2436934.5) and it is improper to call > the function with an earlier date." In as much as UTC attempted to track > UT2 in the 1960s, I would regard 1960 January 1.0 as the dividing point > between proleptic UTC and UTC, and I would regard proleptic UTC as > synonymous with UT2.
Does anyone know where SOFA iauDat got its data for 1960 from? Because that predates the USNO table. Tony. -- f.anthony.n.finch <[email protected]> http://dotat.at/ Plymouth, Biscay: Northwesterly 5 to 7 decreasing 4, then backing southwesterly 5 or 6 later in Plymouth and northwest Biscay. Moderate or rough becoming slight or moderate. Showers, thundery at first. Good, occasionally moderate at first. _______________________________________________ LEAPSECS mailing list [email protected] https://pairlist6.pair.net/mailman/listinfo/leapsecs
