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  1. #11
    Untangle Ninja mrunkel's Avatar
    Join Date
    Jul 2008
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    2,989

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    If your BIOS time is "correct" for your local timezone and you aren't in GMT, then it's not right. On a linux system the BIOS time should be set to UTC.

    The OS time (which is derived from the BIOS at boot time) is also in UTC internally. The local timezone is also set in the OS, from this, all applications can correctly display the local time.

    ntp attempts to connect to several other ntp servers and from this it can calculate the correct time. If the correct time is less than 1,000 seconds from the OS clock, it will attempt to slowly adjust the OS time to the correct time. It does this gradually so that other programs and the operating system don't freak out. If the time is more than 1,000 seconds off, ntp gives up.

    When the system reboots, it sets the hardware clock to the current OS time.
    m.


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    While I'm pretty sure, I can't guarantee that I know what I'm doing. There might be a better way to do this, and this way might actually suck. Make sure you understand the implications of what you're doing before trying to follow these directions.

    It often helps troubleshooting if you have a good network map. Look here if you want my advice on how to draw one.
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  2. #12
    dlr
    dlr is offline
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    Join Date
    Sep 2007
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    Thanks for the clarification... What I ended up doing was, as you suggested:
    - date -s hh:mm:ss (local time)

    Then I ran:
    - hwclock --systohc --utc

    Now, both UT servers show the correct times and timezones.

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