[CentOS] System Time - UTC and Local Time

Thu Dec 1 21:29:14 UTC 2011
Johan Martinez <jmartiee at gmail.com>

Thanks for the explanation Johnny.  I checked on 'System Clock uses
UTC' option and on the next screen I set timezone to CST. I don't remember
what exactly I did there.

I changed /etc/sysconfig/clock as you mentioned and then also changed the
currently set datetime using date command. Then I installed ntp to manage
system time. And it's working as fine now.


On Thu, Dec 1, 2011 at 10:39 AM, Johnny Hughes <johnny at centos.org> wrote:

> On 12/01/2011 10:17 AM, Johan Martinez wrote:
> > I have installed CentOS on a VM by checking 'System Clock uses UTC'
> option.
> > Later I selected CST time zone. Now the date command shows UTC time with
> > CST timezone:  "Thu Dec  1 04:14:39 CST 2011".  How do I change system
> > clock to show CST local time? Also, more likely a dumb question but why
> > isn't date command showing UTC here instead of CST?
> you told it that the system clock is set to UTC ... it sets the time
> based on that when it boots up.
> But, your system clock is NOT really set to UTC, it is set to CST.  So
> you lied :D
> That means it is going to shift your CST value by the amount of hours
> you are away from CST as a correction, since you told it that the
> hardware clock is set to UTC.
> What you need to do to fix it is edit "/etc/sysconfig/clock" and if
> there is a UTC=true, change it to UTC=false.
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