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Thread: Change date and time

  1. #1
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    Change date and time

    I set my date and time to sync with the Internet time, but it does not show the right time. How can I set the time zone so it will show the right time?

    Right now I set the location to Dallas, Texas to try to use the Central Time zone, but the time does not change.

    Thanks.

  2. #2
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    Re: Change date and time

    $ sudo dpkg-reconfigure tzdata

    Is the time off just in the hour or is it off in the minutes and seconds too?
    Last edited by TheFu; October 10th, 2012 at 07:21 PM.

  3. #3
    wojox is offline I Ubuntu, Therefore, I Am
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    Re: Change date and time

    Quote Originally Posted by CodingBeaver View Post
    Right now I set the location to Dallas, Texas to try to use the Central Time zone, but the time does not change.
    I set mine to Chicago and it syncs rather well.

  4. #4
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    Re: Change date and time

    The hour is off.

    I would like to set my time zone to America/Central Time, but there is no such time zone in the drop down list. I recall that I can change the time zone in the previous version of Ubuntu after the installation, but I can't find it in 12.10.

  5. #5
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    Re: Change date and time

    In time / date the world map has grid lines and you click on the map to change the zones.
    Infinite diversity in infinite combination.

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  6. #6
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    Re: Change date and time

    Just found out not only the hour is off, but also the minute. If I set me time zone to Dallas, if my time is 9:30AM, then Ubuntu shows the time is 4:35AM. It seems that the time zone offset didn't apply, and the minute is 5 minutes earlier. Is it a bug or is it just me?

  7. #7
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    Re: Change date and time

    Quote Originally Posted by CodingBeaver View Post
    Is it a bug or is it just me?
    I'm inclined to think it is just your system, but it could be a bug of some type that only you are seeing.

    I've never seen anything like that which couldn't be traced back to a firewall blocking NTP or a virtual machine host providing the wrong time or some other time-server being incorrect. Hibernating or putting a machine into standby has caused time issues for me too, until I rebooted.

    Could your CMOS battery be dead? This is often why system time is incorrect after a machine has been powered off. Also, be certain that your BIOS and system time are set to store GMT/UTC, not local time.

    NTP doesn't change the time immediately, it takes hours to slowly migrate the time to be correct without a clear disruption. We can force a time using the rdate function.

    OTOH, I haven't used the GUI to control time ... ever. I'm a CLI person. After setting the TZ during OS install, I install the ntp package and point the NTP towards my LAN time server. I can't imagine this should be necessary, but I'm more comfortable with this time management. Most issues that I have with time is on Windows machines.

  8. #8
    wojox is offline I Ubuntu, Therefore, I Am
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    Re: Change date and time

    Really nothing?
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  9. #9
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    Re: Change date and time

    Quote Originally Posted by wojox View Post
    Really nothing?
    Really nothing. See the attached screen shots for Dallas and Chicago time zone. If I use UTC time, then the hour shows the current hour, but it is 5 minutes earlier than the actual time.

    My CMOS shows the current date and time. It could be our company's firewall is blocking the port.
    Attached Images Attached Images

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