[tz] Posix time zone question

Steve Allen sla at ucolick.org
Sat Jan 14 23:00:07 UTC 2012

On Sat 2012-01-14T13:57:18 -0800, Jonathan Leffler hath writ:
> Can you elaborate on what it means for a system to be a 'right-based
> system'?
> Is there a URL to explain this?

It means that the count of seconds stored in time_t includes every
broadcast full-second tick since 1970-01-01T00:00:00, that is,
including the leap seconds but not including the fractional second
step that happened at 1972-01-01T00:00:00.

If I am not mistaken, this means that the value in time_t desired by
the "right" zones is the same as is specified by a system which sets
its clock using a device conforming to IEEE 1588 (PTP).

Steve Allen                 <sla at ucolick.org>                WGS-84 (GPS)
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