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.
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.