On Thu 2015-05-21T09:02:09 -0300, Eric R. Smith hath writ: > and that "each and every day shall be accounted for by exactly 86400 > seconds". Is this correct? Since the length of the day is not in fact > exactly 86400 SI seconds, it would follow that a POSIX compliant system > has to know how many days have elapsed since the epoch, i.e. it needs to > have some kind of access to the sky. Am I misunderstanding something?
POSIX does not want to know geophysics, nor astrometry, nor politics. POSIX does not care what is meant by "day". POSIX wants someone else to decide what "day" means, and for all those other details to be handled outside the kernel in the libraries and applications. If that decision for the kind of "day" is any form of Universal Time then, over the long span of time, POSIX is counting mean solar seconds, not SI seconds. -- Steve Allen <[email protected]> WGS-84 (GPS) UCO/Lick Observatory--ISB Natural Sciences II, Room 165 Lat +36.99855 1156 High Street Voice: +1 831 459 3046 Lng -122.06015 Santa Cruz, CA 95064 http://www.ucolick.org/~sla/ Hgt +250 m _______________________________________________ LEAPSECS mailing list [email protected] https://pairlist6.pair.net/mailman/listinfo/leapsecs
