Disable Automatic Daylight Savings Adjustment (Windows NT/2000/XP)

Registry Guide for Windows
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Registry tweaks, tricks & hacks to optimize, enhance and secure Microsoft Windows.

Disable Automatic Daylight Savings Adjustment (Windows NT/2000/XP)
Category: Home > Windows > System

This tweak can be easily applied using WinGuides Tweak Manager.
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Windows will normally attempt to automatically adjust the system clock for daylight saving changes based on the computer timezone. This tweak allows you to disable the automatic adjustment.

Open your registry and find the key below.

Create a new DWORD value, or modify the existing value called 'DisableAutoDaylightTimeSet' using the settings below.

Exit your registry, you may need to restart or log out of Windows for the change to take effect.


(Default)	REG_SZ	(value not set)
DisableAutoDaylightTimeSet	REG_DWORD	0x00000001 (1)


	HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation

Settings:

System Key: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation]
Name: DisableAutoDaylightTimeSet
Type: REG_DWORD (DWORD Value)
Value: (1 = disable daylight-savings adjustment)

Disclaimer: Modifying the registry can cause serious problems that may require you to reinstall your operating system. We cannot guarantee that problems resulting from modifications to the registry can be solved. Use the information provided at your own risk.

Last Modified: May 21, 2003

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