1. Click on the Start Button to open the Start Menu.
2. Here open Settings > Time & Language.
3. Now in the left pane, select Date & Time.
4. In the right pane toggle the sliders to the On position to set time and time zone automatically. 

For Windows 11:

1. Click on the Start Button to open the Start Menu.
2. Here open Settings > Time & Language.

      3. Now select Date & Time.

      4. In the right pane toggle the sliders to the On position to set time and time zone automatically.