Re: time zone and UTC issue

["J. B" <bakshi12@gmail.com>]

On Wed, 28 Nov 2012 10:37:49 +0000
Darac Marjal <mailinglist@darac.org.uk> wrote:

> On Wed, Nov 28, 2012 at 03:55:16PM +0530, J. B wrote:
> > 
> > Hello list,
> > 
> > My box is configured to the local time zone from beginning, both hwclock and system time.
> > But linux always favor hwclock to UTC. What is the advantage of doing that ?
> > 
> > If I need my hwclock to UTC then what should be the right way to do that ?
> > I have followed "dpkg-reconfigure tzdata" and found it has changed the local time to
> > UTC too. Confused .....
> 
> The problem is that the hardware clock doesn't store a timezone, so when
> it reports the time as 10:32, is that 10:32 in your current time zone,
> or 10:32 in a standardized time zone (i.e. UTC) or...
> 
> Which you choose doesn't really make much difference, so long as all
> OSes that update the hwclock agree on what it's set to. You can agree to
> keep it in UTC-5 if you like, even if that's NOT your local time zone,
> just so long as you tell your system to apply the correct offset when
> reading/writing it.
> 
> The main issue comes when you're dual-booting with Windows. By default,
> that assumes the hwclock reads local time. If Linux thinks it should be
> UTC, then you're going to see odd time jumps as you switch between them.
> 
> Hope that clarifies things.

Thanks for the points. This box doesn't have any window system.
So please advise how can I set hwclock and localtime.

Thanks