Re: time zone and UTC issue [rant]
- To: debian-user <firstname.lastname@example.org>
- Subject: Re: time zone and UTC issue [rant]
- From: Ralf Mardorf <email@example.com>
- Date: Thu, 29 Nov 2012 03:22:24 +0100
- Message-id: <1354155744.2393.4.camel@q>
- In-reply-to: <20121129000141.2AC17E863F@wormhole.physics.ubc.ca>
- References: <kaTCqfirstname.lastname@example.org> <kaTCqemail@example.com> <kaTCqfirstname.lastname@example.org> <kaTCqemail@example.com> <kaTCqfirstname.lastname@example.org> <kaTCqemail@example.com> <kaURQ-5Btfirstname.lastname@example.org> <kaVEd-6Akemail@example.com> <20121129000141.2AC17E863F@wormhole.physics.ubc.ca>
On Wed, 2012-11-28 at 16:01 -0800, unruh wrote:
> In linux.debian.user, you wrote:
> > Exactly, there are no issues when using Linux with the hardware clock
> > using local time.
> Yes, there are. If the clock is on localtime, when Linux boots up it
> assumes that the bios clock really is on local time-- and if since you
> last shut it down, daylight saving time change has occured, it assumes
> that yo uhave adjusted your bios clock to the correct daylight saving
> time. Ie, YOU have to make sure that your bios clock is always on the
> correct time including all DST changes. Under UTC the bios clock never
> changes for DST. Linux uses /etc/localtime to display the DST corrected
> time, but the bios clock does NOT have to be adjusted with DST occurs.
That's not true, after running ntpdate everything is ok.
> > I don't say that UTC always is an disadvantage, I just try to say, that
> > for some usages it is an disadvantage.
So the BIOS does transform the UTC time to local time too? It doesn't.
> > Nobody does explain for what usage UTC is an advantage.