Your computer's clock is used to record the time whenever you create or modify files on your computer. You can change the clock's time and time zone.

  1. Open Date and Time by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Clock, Language, and Region, and then clicking Date and Time.

  2. Click the Date and Time tab, and then click Change date and time. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. In the Date and Time Settings dialog box, do one or more of the following:

    • To change the hour, double-click the hour, and then click the arrows to increase or decrease the value.

    • To change the minutes, double-click the minutes, and then click the arrows to increase or decrease the value.

    • To change the seconds, double-click the seconds, and then click the arrows to increase or decrease the value.

  4. When you have finished changing the time settings, click OK.

  5. To change the time zone, click Change time zone.

  6. In the Time Zone Settings dialog box, click your current time zone in the list, and then click OK.

    Note

    • If your time zone observes daylight saving time and you want your computer's clock to be adjusted automatically when daylight saving time changes, make sure the Automatically adjust clock for Daylight Saving Time check box is selected.

  7. Click OK.

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Set up additional clocks

Windows can display up to three clocks: one for the local time, and two for the time in other time zones.

  1. Open Date and Time by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Clock, Language, and Region, and then clicking Date and Time.

  2. Click the Additional Clocks tab.

  3. For each clock, select the check box next to Show this clock. Select a time zone from the list, type a name for the clock (you can type up to 15 characters), and then click OK.

For information about using the Clock gadget in Windows Sidebar, see Windows Sidebar and gadgets (overview).

Synchronizing with an Internet time server

You can synchronize your computer clock with an Internet time server. This means that the clock on your computer is updated to match the clock on the time server, which can help ensure that the clock on your computer is accurate. Your clock is typically updated once a week and needs to be connected to the Internet for the synchronization to occur.

Note

  • If your computer is on a domain, you can't synchronize your clock with an Internet time server.

  1. Open Date and Time by clicking the Start button Picture of the Start button, clicking Control Panel, clicking Clock, Language, and Region, and then clicking Date and Time.
  2. Click the Internet Time tab, and then click Change settings. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

  3. Click Automatically synchronize with an Internet time server, select a time server, and then click OK.