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Synchronizing Your Computer's Clock with Penn's Network Time Server in Windows XP and Windows Vista

To synchronize your computer's clock with Penn's network time server:

Kerberos requires that your Windows clock be in sync with that of the Kerberos KDC (ticket-dispensing) server. You can synchronize your computer's clock with Penn's network time server to ensure that your computer's date and time remain consistent with that of the Kerberos server.

  1. From the Start Menu, select Control Panel.

  2. From the Control Panel window, select the Date, Time, Language and Regional Options category.

  3. Click the Date and Time icon.

  4. In the Date and Time Properties window, click the Internet Time tab.

  5. Click the checkbox labeled "Automatically synchronize with and Internet time server" to activate it.

  6. Type "timeserver1.upenn.edu" in the "Server" field.

  7. Click OK button in close window and preserve settings.

  8. Close the Date and Time control panel.

Note: Penn has 3 time servers. You can use any of these servers to synchronize time. Below is a list of the Penn time servers:

  • timeserver1.upenn.edu

  • timeserver2.upenn.edu

  • timeserver3.upenn.edu

To select the proper local time zone for your computer:

Once you have synchronized your computer's clock, if it still differs widely from your local time, check to determine whether you have set the time zone correctly.

  1. From the Start Menu, select Control Panel.

  2. From the Control Panel window, select the Date, Time, Language and Regional Options category.

  3. Click the Date and Time icon.

  4. In the Date and Time Properties window, click the Time Zone tab.

  5. Use the pull-down menu to select the correct local time zone. For example, select the option that includes "Eastern Time (US & Canada)" for Philadelphia.

  6. Click the checkbox labeled "Automatically adjust clock for dayight savings changes" to activate it.

  7. Close Date and Time control panel.

To change the local time zone:

If you have transported your computer to another time zone and want to display the new local time, you must change the time zone designation, not the time display itself, in order to maintain proper synchronization with the network time server. For example, if you carry a laptop computer with you outside the eastern United States, or if you take your workstation outside the Eastern time zone during summer break, you should follow these instructions to reset your computer's clock.

Note: Do not attempt to manually adjust either the Current Date or Current Time fields. They will be automatically and correctly reset by steps below.

  1. From the Start Menu, select Control Panel.

  2. From the Control Panel window, select the Date, Time, Language and Regional Options category.

  3. Click the Date and Time icon.

  4. In the Date and Time Properties window, click the Time Zone tab.

  5. Use the pull-down menu to select the correct local time zone for your new location. For example, select the option that includes "United Kingdom" for Liverpool, England.

  6. Click the checkbox labeled "Automatically adjust clock for dayight savings changes" to activate it.

  7. Close Date & Time control panel.

 

Information Systems and Computing
University of Pennsylvania
Information Systems and Computing, University of Pennsylvania