On Thu, Oct 13, 2022 at 2:40 AM Marc Nieper-Wißkirchen < [email protected]> wrote:
What do you mean by "tai-epoch-time", by the way? > 1958-01-01T00:00:00 UTC (which is the point at which UTC-TAI is zero). By the way, it turns out that not all TAI seconds are the same length, per WIkipedia: In the 1970s, it became clear that the clocks participating in TAI were ticking at different rates due to gravitational time dilation <https://en.wikipedia.org/wiki/Gravitational_time_dilation>, and the combined TAI scale, therefore, corresponded to an average of the altitudes of the various clocks. Starting from the Julian Date 2443144.5 (1 January 1977 00:00:00), corrections were applied to the output of all participating clocks, so that TAI would correspond to proper time at the geoid <https://en.wikipedia.org/wiki/Geoid> (mean sea level <https://en.wikipedia.org/wiki/Mean_sea_level>). Because the clocks were, on average, well above sea level, this meant that TAI slowed by about one part in a trillion. However, I think we can ignore this discrepancy. Would it make sense to define a jiffy as a nanosecond for > implementations of the large language? > That works for me.
