UTC offset incorrect in Windows OS


  1. Posts : 1
    Windows 10
       #1

    UTC offset incorrect in Windows OS


    Today is April 24th 2018 and the UK is in British summertime which is UTC + 1 hour. Windows shows my offset as UTC + 0. I am in London (England) and my windows clock is showing the correct time but I have an application which needs to calculate UTC and it does this by taking the clock time and adjusting it by the UTC offset and it is currently getting the wrong answer. Ubuntu knows what the UTC offset is , as does Apple - why not Microsoft? I would appreciate comments. Thanks folks.
      My Computer


  2. Posts : 1,366
    Windows 10 Pro x64
       #2

    I'm not all too familiar with these settings, but is your BIOS set to the properly time? That can often cause time issues within the OS.
      My Computer


  3. Posts : 5,478
    2004
       #3

    Windows uses local time for some unknown historical reason. If you want you can set it to UTC (especially useful if you dualboot with Linux and/or macOS).

    This registry change works on Windows 10 (I use UTC): Time - ArchWiki
      My Computer


  4. Posts : 1
    Windows
       #4

    whycantiuseem said:
    Today is April 24th 2018 and the UK is in British summertime which is UTC + 1 hour. Windows shows my offset as UTC + 0. I am in London (England) and my windows clock is showing the correct time but I have an application which needs to calculate UTC and it does this by taking the clock time and adjusting it by the UTC offset and it is currently getting the wrong answer. Ubuntu knows what the UTC offset is , as does Apple - why not Microsoft? I would appreciate comments. Thanks folks.
    I raised an issue with Microsoft. You are totally right. Offset for UK is currently (2021) set to a wrong one.. and it seems nobody concerned. https://answers.microsoft.com/en-us/...4-774f43ca35cf
      My Computer


 

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