In message: <[email protected]>
            Zefram <[email protected]> writes:
: I believe some people do do the 24 s offset that you suggest, however.
: I think it's through ignorance of the rubber-seconds era and its leaps.
: These people are effectively using an epoch of 1972-01-01T00:00:00 UTC
: = 63072000.  There's no clean description of what they're counting since
: 1970.  If doing this then it seems more consistent for pre-1972 timestamps
: to count back in TAI seconds, but in practice I think a vague-UT pre-1972
: timescale gets grafted onto the TAI-synched post-1972 timescale.  Bit of
: a mess.

It is a useful engineering approximation.  Oh, wait, you said a bit of
a mess already...

Warner
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