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Change time from BST to GMT


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4 replies to this topic

#1 The_Codesee

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Posted 02 November 2016 - 04:18 PM

I'm in the UK and we've just gone from BST timezone to GMT.

 

The issue is that my Windows 10 laptop is still in the BST timezone and therefore is an hour behind. How do I change it to GMT?



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#2 AnotherMindbomb

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Posted 02 November 2016 - 04:20 PM

Windows + X

Control Panel

Date And Time

Change Time and make sure you're in the correct time zone ( you can ensure that the change over is automatic whilst you're changing the timezone)


Edited by AnotherMindbomb, 02 November 2016 - 04:21 PM.


#3 Sintharius

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Posted 02 November 2016 - 04:25 PM

You can right click on the clock and select Adjust date/time, then switch to the appropriate timezone.

#4 Chris Cosgrove

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Posted 02 November 2016 - 06:20 PM

I agree with all three posters about how you set the clock but it doesn't always work !

 

I too live in the UK and, running Win 7, my timezone is set to UTC + 00.00 (London, Dublin, Portugal etc.) but every so often it jumps an hour to UTC + 1 which puts me somewhere in the Atlantic West of Ireland. I just re-set the time on the clock. Oddly, since I dual boot with Linux Mint, the Linux clock always shows the right time or at least I have never noticed it to be wrong.

 

Chris Cosgrove



#5 x64

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Posted 03 November 2016 - 02:03 AM

Chris's issue is easier to explain, and I can't say if it relates to The_Codesee's issue, but it might get us thinking along a suitable path.

 

Windows adjusts the underlying BIOS hardware clock(the RTC) when it thinks it has traversed into or out of daylight saving time. It also keeps a note of whether it has already done it. If you have two OSs, and they are both making that adjustment then you can imagine a certain confusion.

 

Look at (but don't fiddle with) HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation

Values Bias, (basic TZ offset to UTC), DaylightBias (Offset to Bias when DST active), ActiveTimeBias - Sum of the previous two representing what Windows thinks it's currently set to.

 

I'm assuing it uses those settings to decide if it has already adjusted the Bios RTC.

 

I assume that if either OS can get NTP, it might further muddy the water, but I'm not sure of how the interactions mght present themselves in Chris's case.

x64






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