[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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