[LEAPSECS] POSIX and C (Was: Re: ISO Influence)

Steve Allen sla at ucolick.org
Wed Dec 22 15:36:03 EST 2010


On Wed 2010-12-22T18:46:56 +0000, Poul-Henning Kamp hath writ:

> Broadcast time *IS* civil time, it is broadcast as a service to civilians.

>

> Take Germanys DCF77 as example:

>

> DCF77 is the official legal time of Germany[1].


By transmitting timestamps which are not UTC DCF77 is not in
conformance with ITU-R TF.460.

In constrast, WWV and WWVB do transmit UTC, but nowhere in
any US jurisdiction is that the legal civil time.

And POSIX chooses not to conform with ITU-R TF.460.

So the rules are subject to arbitrary interpretation by sovereign
entities in order to serve their own historical/legal/practical
purposes. There is no evident international authority to which
computer implementations can conform without risk of flame war.
Anybody can defensibly claim justification for doing anything they want.

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


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