Windows 10: Additional clocks: what's going on?

  1.    28 May 2018 #1

    Additional clocks: what's going on?

    Just enabled two additional clock in Windows Settings for two different time zones. ​Here's what I have in the settings

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    As you can see, the time zones for these two clocks are different: one is GMT+2 and another is GMT+3. However, when I open the popup from my tray I see that both clocks show the same time

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    What's going on here? Why am I seeing the same times in the popup?
      My ComputerSystem Spec

  2.    28 May 2018 #2

    Further experiments show that this is a bug. Other GMT+2 selections work correctly (like "GMT+2 Kaliningrad), but "Helsinki et al" and "Jerusalem" are screwed up: despite saying GMT+2 in the list they are actually interpreted as GMT+3 internally.

    P.S. It is a GUI-level bug, since Helsinki and Jerusalem are GMT+3 in reality. I.e. the popup shows the correct time for these locations, but the list lists them with incorrect GMT offset value.
    Last edited by AndreyT; 28 May 2018 at 21:21.
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  3. Berton's Avatar
    Posts : 5,284
    Win10 Home and Pro, Win10 Insider Preview, WinXP Home Premium, Linux Mint
       28 May 2018 #3

    I use this when in doubt:
    In the USA we have to consider DST/Daylight Saving Time, usually an hour different from ST/Standard time in most areas. There are some areas that don't observe DST such as much of Arizona. I have my local time plus UTC/GMT/Zulu time for the second [military may use Zulu for the 24-hour clock]. I spent 35 years using the references in Aviation and Maritime.
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  4. Brink's Avatar
    Posts : 32,312
    64-bit Windows 10 Pro build 18242
       28 May 2018 #4

    If you like, you can also pin to Start a world clock in Windows 10.

    Pin World Clock to Start in Windows 10 | Windows 10 Tutorials
      My ComputersSystem Spec

  5.    29 May 2018 #5

    Oh, so, this is not even a bug. This is simply my own confusion.

    Apparently, the location list in the setup dialog lists the "canonical" timezones for those locations. I.e. it does not take into account whether DST is currently in effect in that location. Meanwhile, the clock popup shows the actual time, which can be affected by DST.

    So, it is perfectly normal to see GMT+2 and GMT+3 in the list and at the same time see identical regional time displayed in the popup.
      My ComputerSystem Spec


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