If you want to disable the automatic adjustment for daylight savings time, use
the Control Panel, Date/Time icon, Time Zone tab, and unclick check box Automatically adjust for daylight savings changes. If
unchecked, you will find:
Hive: HKEY_LOCAL_MACHINE
Key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation
Name:
DisableAutoDaylightTimeSet
Type: REG_DWORD
Value: 0x1