On 29 Apr, 2015, at 18:01 , Mike Lawson <[email protected]> wrote: > So, what I take from this is, 1) UT1 (and hence UTC) is based on the > International Reference Meridian, not the Prime Meridian (Greenwich). 2) > “True” GMT (if the mean sun can accurately be measured and predicted by > formulae, which has its own set of problems and error bars) lags UT1 by about > 0.36 seconds; but it doesn’t really matter, since the whole world is now > based on the IRM.
That's correct except that I don't think the 0.36 seconds is seconds of time, it is angular seconds. That would be a 24 millisecond time difference. Dennis Ferguson _______________________________________________ LEAPSECS mailing list [email protected] https://pairlist6.pair.net/mailman/listinfo/leapsecs
