Question about DST changes in the US

[Mikkel L. Ellertson]

Mike McCarty wrote:
> Les Mikesell wrote:
>>
>>
>> Ntp and fedora always run in UTC which doesn't change for local DST 
> 
> Are you sure about this, Les? I've got a Fedora install, and I recall
> specifically telling it to use hardware time, not UTC, and when I
> boot Windows XP it tells me the same time as Fedora.
> 
>> variations.  The tzdata info is used for conversions to display
>> localtime using the local conventions for the user's timezone.
> 
> Mike
The time when the system is running is in UTC, and converted to
local time for display. The system reads the hardware clock on boot,
and I believe on resuming from suspend. It writes to the hardware
clock on shutdown. (and suspend?) The settings in /etc/adjtime tell
hwclock to use UTC or localtime when talking to the clock, and give
drift information for the hardware clock. /etc/sysconfig/clock has
local time information, and if the clock is local time or UTC.

The system also uses local time for most logs, and for cron jobs.
Also, a user's time zone can be different then the system time zone...

Mikkel
-- 

  Do not meddle in the affairs of dragons,
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