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Thread: Time adjustment to Day Light Saving (north america)

  1. #1
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    Default Time adjustment to Day Light Saving (north america)

    I am using OpenSuse 12.1 and have a problem for permanent adjustment of time after the day light saving started.

    This year, in north america (except for few states and provinces), the day light saving time (DST) started from March 11, 2012 (from 2:00 AM of the second Sunday of March). Since then, I did adjustment of the time as below:
    - From task bar, right clicked on the Time and choose "Adjust Date and Time", KDE control module for Date and Time was opened
    - Chose "north-america.pool.ntp.org" under "Time Server"
    - Checked the check box "Set date and time automatically"
    - Under "Time Zone" tab, chose "Montreal" as my time zone (Eastern Time)
    - Clicked on "Apply" (with root password authenticated)
    - Time now adjusted to new time, which was in synch to the current day light saving time

    But, after each reboot/restart, the time goes 1-hour backward.

    Question:
    How can I make the system sync and adjust time to the Time Server (north-america.pool.ntp.org) permanent ?

  2. #2
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    Default Re: Time adjustment to Day Light Saving (north america)

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  3. #3
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    Default Re: Time adjustment to Day Light Saving (north america)

    DST should be handled automaticaly if a few things are doen correct. I can think of:

    . having the correct time zone chosen in your system, and also as user (when the user wants to live in a different time zone then the system default).;

    . having the latest update of timezone data installed from the Update repo. This is especialy important if politics did change the rules a short time ago. People are trying to update that information into the time zone database asap and it is distributed to openSUSE supported levels using Update. But sometimes politics change the policy overnight one or two days before. Right now I have an update to timezone and timezone-java in Update. You can read the description to see that it contains updates for a lot of timezones.
    Henk van Velden

  4. #4
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    Default Re: Time adjustment to Day Light Saving (north america)

    On 2012-03-19 05:36, jrahman wrote:

    > This year, in north america (except for few states and provinces), the
    > day light saving (DST) time started from March 11, 2012 (from 2:00 AM of
    > the second Sunday of March). Since then, I did adjustment of the time as
    > below:


    To add to what Henk said, you can not adjust the clock local time if the
    time zone has a different DST setting than the "real" one. Adjustment is in
    that case futile.

    Meaning that if the computer things that DST starts in a week, and your
    politicians say it is today, you loose.

    If that is not the case, I'll reconsider and give further advice. :-)

    --
    Cheers / Saludos,

    Carlos E. R.
    (from 11.4 x86_64 "Celadon" at Telcontar)

  5. #5
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    Default [SOLVED] Time adjustment to Day Light Saving (north america)

    [SOLVED]
    Thanks for the solution.
    Just did the configuration from YAST->System->Data & Time, as indicated below.
    Quote Originally Posted by caf4926 View Post

  6. #6
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    Default Re: [SOLVED] Time adjustment to Day Light Saving (north america)

    Quote Originally Posted by jrahman View Post
    [SOLVED]
    Thanks for the solution.
    Just did the configuration from YAST->System->Data & Time, as indicated below.
    Good to know
    Well done
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