New definition of "Seconds Since the Epoch" in POSIX

Markus Kuhn Markus.Kuhn at
Fri Feb 8 02:12:24 UTC 2002

Paul Eggert wrote on 2002-02-07 23:44 UTC:
> POSIX 1003.1-2001 is a large new spec, with quite a few bugs (e.g. <time.h>
> allows tm_sec to be 60, which means it does allow leap seconds!), so
> it wouldn't be surprising if some interpretation requests were needed
> to shake out some of the problems here.

Standardization is a slow process. Remember how many years it took us to
get the upper limit of tm_sec from 61 to 60? :)


Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK
Email: mkuhn at,  WWW: <>

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