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Thread: Date and Time

  1. #1

    Angry Date and Time

    I have a switch tray on my computer and I installed opensuse in one of the hard drives that I have but as I switch between the windows hard drive and opensuse the time changes all the time. For example it's 10pm right now and if I switch the hard drive to opensuse the time automatically gets adjusted 4 hours back and then I fix it and when I switch back to my windows hard drive the time goes forward 4 hours. I check both region settings and they are both set to NY Eastern time. Why is it doing this?

  2. #2

    Default Re: Date and Time

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    windows is a strange OS that sets the local time (Greenwich plus timezone
    offset) to the hardware clock time while every other OS, by default, sets
    the hardware clock to Greenwich and then calculates the displayed time for
    whichever user's locale. As a result when you boot from Linux to windows
    your clock is appropriately set to GMT/UTC time and whenever you modify
    things and boot back to Linux your hardware clock is incorrectly set to
    your local time. This is strange (for windows to do that) because
    timestamps in the computer world are done in GMT/UTC starting from
    1970-01-01 00:00:00Z (midnight, January first, GMT/UTC).

    You have two options. Option #1 you are already doing. Option #2 is to
    use yet another Linux option to have your hardware clock set to local
    time, an option added to Linux to help make up for windows' deficiencies.

    Good luck.





    On 06/22/2011 08:36 PM, idude0407 wrote:
    >
    > I have a switch tray on my computer and I installed opensuse in one of
    > the hard drives that I have but as I switch between the windows hard
    > drive and opensuse the time changes all the time. For example it's 10pm
    > right now and if I switch the hard drive to opensuse the time
    > automatically gets adjusted 4 hours back and then I fix it and when I
    > switch back to my windows hard drive the time goes forward 4 hours. I
    > check both region settings and they are both set to NY Eastern time.
    > Why is it doing this?
    >
    >

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  3. #3
    Join Date
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    Default Re: Date and Time

    The Windows localtime thing is a millstone all the way back from DOS days.

    A well-known researcher suggested reform some 10 years ago. Maybe someday they will get around to it.

    IBM PC Real Time Clock should run in UT

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