How to Turn On or Off Adjust for Daylight Saving Time Automatically in Windows 10


Your PC's clock is used to record the time whenever you create or modify files on your PC. You can change the clock's date, time and time zone.

Many applications and cloud services reference the underlying Windows operating system for daylight saving time (DST) and time zone (TZ) information.

If your time zone observes daylight saving time and you want your PC's clock to be adjusted automatically when daylight saving time changes, you would want to turn on adjust for daylight saving time automatically.

Windows 10 will automatically adjust the time for daylight saving time by default, but you can turn this setting on or off anytime you want.

See also:

This tutorial will show you how to turn on or off automatically adjust clock for daylight saving time (DST) in Windows 10 for all users.

Contents

  • Option One: Turn On or Off Adjust for Daylight Saving Time Automatically in Settings
  • Option Two: Turn On or Off Adjust for Daylight Saving Time Automatically in Control Panel
  • Option Three: Turn On or Off Adjust for Daylight Saving Time Automatically using a REG file






OPTION ONE

Turn On or Off Adjust for Daylight Saving Time Automatically in Settings


1 Open the Settings app, and click/tap on the Time & Language icon.

2 Click/tap on Date & Time on the left side, and turn on (default) or off Adjust for daylight saving time automatically on the right side for what you want. (see screenshot below)

The Adjust for daylight saving time automatically setting will be grayed out if Set time zone automatically is turned on.


3 When finished, you can close Settings if you like.

Turn On or Off Adjust for Daylight Saving Time in Windows 10-daylight_saving_time_settings.png






OPTION TWO

Turn On or Off Adjust for Daylight Saving Time Automatically in Control Panel


1 Open the Control Panel (icons view), and click/tap on the Date and Time icon.

2 In the Date and Time tab, click/tap on the Change time zone button under the Time zone section. (see screenshot below)

Turn On or Off Adjust for Daylight Saving Time in Windows 10-daylight_saving_time_control_panel-1.png

3 Check (default) or uncheck Automatically adjust clock for Daylight Saving Time for what you want, and click/tap on OK. (see screenshots below)

Turn On or Off Adjust for Daylight Saving Time in Windows 10-daylight_saving_time_control_panel-2.png Turn On or Off Adjust for Daylight Saving Time in Windows 10-daylight_saving_time_control_panel-3.png

4 Click/tap on OK. (see screenshot below)

Turn On or Off Adjust for Daylight Saving Time in Windows 10-daylight_saving_time_control_panel-4.png






OPTION THREE

Turn On or Off Adjust for Daylight Saving Time Automatically using a REG file


You must be signed in as an administrator to use this option.


1 Do step 2 (on) or step 3 (off) below for what you would like to do.


2 To Turn On Adjust for Daylight Saving Time Automatically

This is the default setting.

A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Turn_ON_adjust_for_daylight_saving_time_automatically.reg

Download

(Contents of .reg file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation]
"ActiveTimeBias"=dword:0000012c
"Bias"=dword:00000168
"DaylightBias"=dword:ffffffc4
"DaylightStart"=hex:00,00,03,00,02,00,02,00,00,00,00,00,00,00,00,00
"DynamicDaylightTimeDisabled"=dword:00000000
"StandardStart"=hex:00,00,0b,00,01,00,02,00,00,00,00,00,00,00,00,00


3 To Turn Off Adjust for Daylight Saving Time Automatically

A) Click/tap on the Download button below to download the file below, and go to step 4 below.

Turn_OFF_adjust_for_daylight_saving_time_automatically.reg

Download

(Contents of .reg file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation]
"ActiveTimeBias"=dword:00000168
"Bias"=dword:00000168
"DaylightBias"=dword:00000000
"DaylightStart"=hex:00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00
"DynamicDaylightTimeDisabled"=dword:00000001
"StandardStart"=hex:00,00,00,00,00,00,00,00,00,00,00,00,00,00,00,00


4 Save the .reg file to your desktop.

5 Double click/tap on the downloaded .reg file to merge it.

6 When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

7 Manually synchronize your clock or restart computer to apply.

8 You can now delete the downloaded .reg file if you like.


That's it,
Shawn


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