Re: The madness of summer and winter time
- From: Nobody <nobody@xxxxxxxxxxx>
- Date: Sun, 29 Mar 2009 22:42:42 +0100
On Sun, 29 Mar 2009 12:07:15 +0000, Jan Panteltje wrote:
So, wondered this morning why the world needed to wake me up at 7 o'clock
on a Sunday...
Found out it was actually 8 o'clock...
Went around the house to set the clocks, do you know how many clocks you
have :-)??? But I would have expected at least some to get the summer
time right....
But no, _only my Canon camera_ got it right, and the Linux PC. Not even
the cellphones, or the eeePC (also Linux), got it right.
If Linux got it wrong, either you haven't selected the correct timezone,
or your timezone files are wrong (e.g. pre-date the latest changes to the
DST rules), or the hardware clock uses local time (which is a bad idea
unless you need to dual-boot Windows).
Linux' system clock is in UTC, as are filesystem timestamps. The hardware
clock can be in either local time or UTC. The former is normally only used
if you dual-boot Windows, which requires that the real-time clock keeps
local time. The problem with using local time is that, if the system is
switched off when DST changes, on the next boot the system doesn't know
whether to interpret the hardware clock as daylight time or standard time,
so you have to adjust it manually.
.
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