[LEAPSECS] Toasting Unix timestamp 1234567890
zefram at fysh.org
Sat Feb 14 13:06:59 EST 2009
M. Warner Losh wrote:
>I'd phrase these like so:
>UTC's 1970 and 1971 together had 63072001.999918 SI seconds (exactly).
That's not quite true. They had that many *TAI* seconds, but TAI seconds
are not equal to SI seconds. TAI is an imperfect realisation of the
SI second. UTC(TT) is a mildly interesting notion.
>The TAI time scale ticked 63072001.999918 SI seconds (exactly), while
>UTC ticked 63072000 "seconds" between 00:00:00 1970-01-01 UTC and
>00:00:00 1972-01-01 UTC.
UTC ticked some 63072000.107757997 seconds in that time. Of greater
relevance is that UTC ticked exactly 730 days (as you indicate).
So many nits to pick.
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