The SetTimeZoneInformation function sets the current time-zone parameters. These parameters control translations from Coordinated Universal Time (UTC) to local time.
BOOL SetTimeZoneInformation(
CONST TIME_ZONE_INFORMATION *lpTimeZoneInformation |
// address of time-zone settings |
); |
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
All translations between UTC and local time are based on the following formula:
UTC = local time + bias
The bias is the difference, in minutes, between UTC and local time.