On Mon, 14 Apr 2025 15:56:56 -0700, Keith Thompson
<Keith.S.Thompson+u@gmail.com> wrote:
Huge numbers of systems already use the perfectly reasonable POSIX
epoch, 1970-01-01 00:00:00 UTC. I can think of no good reason to
standardize anything else.
NNTP uses unsigned-32bit seconds from 1900-01-01 'UTC' (really a blend
of GMT then TAI aligned like UTC but not actually representing the
leapseconds; yes that's a bodge). It will wrap in 2036, about 2 years
before progams and data (still) using signed-32bit seconds from 1970
more famously will.
Astronomers count Julian Day Numbers from 4713 BC proleptic Julian.
This was chosen to ensure that all astronomical observations or events
in recorded history have positive dates.
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