[tz] Fwd: New Version Notification for draft-murchison-rfc8536bis-06.txt

Steve Allen sla at ucolick.org
Thu Mar 9 21:59:34 UTC 2023

On Thu 2023-03-09T13:30:52-0800 Paul Eggert via tz hath writ:
> Leap Second Table: A record of a series of consecutive leap seconds.
> Leap Second Table Expiration: The cutoff time for a leap second table, such
> that the table does not record the presence or absence of leap seconds on or
> after the cutoff. For example, a leap second table published in January,
> which predicts the presence or absence of a leap second at June's end, might
> expire in mid-December because when the table is published it is not known
> whether a leap second will occur at December's end.

Be aware that this six month expiration cycle is a leftover from the
Soviet demands at the inception of leap-seconds and is not explicit in
any regulatory document.  It is tradition, albeit long established.

Steve Allen                    <sla at ucolick.org>              WGS-84 (GPS)
UCO/Lick Observatory--ISB 260  Natural Sciences II, Room 165  Lat  +36.99855
1156 High Street               Voice: +1 831 459 3046         Lng -122.06015
Santa Cruz, CA 95064           https://www.ucolick.org/~sla/  Hgt +250 m

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