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On Wednesday 28 November 2012 07:37:49 Darac Marjal 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.
Yep. Unfortunately Microsoft never learned in > 25 years that the world has more time zones than they might have imagined in DOS-times. The drawback comes when you live in an obscure country with daylight savings time other than main cities like Santiago de Chile or Caracas, Venezuela. Bolivia, Paraguay and many of the different timezones of Brazil are entirely ignored. GMT +X or -X is just not enough. This does not only affect double boot systems but also syncing PDAs and Smartphones if you are travelling internationally - even WindowsOS to WindowsOS. It is a pain! So I learned to ignore the time on Windows systems with double boot. That is pure resignation. Windows does not only include crippleware but also is based on cripple-standards. For me UNIX ist the standard because it works and the ret**ds @ MS can eat their own medicine if they like it that way!
If MS had invented the chronometer ships nowadays still would founder because of navigators being utterly unable to calculate the latitude just like in 16th century. I'd recommend: MS please get a rest on the Scilly Islands!
Kind regards Eike |