Nov. 17, 2020
6:19 p.m.
On 2020-11-17 16:21, Steve Allen wrote:
On Tue 2020-11-17T13:23:36+0000 Michael H Deckers via tz hath writ:
UTC was defined by the BIH since 1961 as a function of TAI. Alas the process was not that simple, and the issues of BIH Bulletin Horaire have the tabulations that show how messy it was.
Thanks for the details! Yes, it must have been quite complex -- the BIH has established a reference time scale (later called UTC) to which the most accurate time signals could be traced to microsecond precision, and to which the less accurate determinations of UT1 could be related, while the methods of precise time and frequency transfer have been rapidly evolving. Michael Deckers.