[docs] [issue7229] Manual entry for time.daylight can be misleading
report at bugs.python.org
Sat Jun 5 19:43:59 CEST 2010
Alexander Belopolsky <belopolsky at users.sourceforge.net> added the comment:
On Sat, Jun 5, 2010 at 1:24 PM, anatoly techtonik
<report at bugs.python.org> wrote:
> As for offtopic UTC vs GMT - I doubt there is a way to clearly express that the offset sign of the
> returned values is negated in comparison with real "UTC offsets" without resorting to some
> king of alternative east/west scale.
Sure there is. Here is how RFC 3339 handles this:
Numeric offsets are calculated as "local time minus UTC". So the
equivalent time in UTC can be determined by subtracting the offset
from the local time.
and here is a quote from MacOS man page for tzset:
offset Indicates the value one must add to the local
time to arrive at Coor-
dinated Universal Time.
No geographic reference needed. (And the issue is not UTC vs. GMT:
both UTC and GMT are timescales, sometimes even considered the same.
The off-topic issue is UTC vs. Prime Meridian.)
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