Windows users can synchronize their PC clocks by using the built-in time synchronization utility in the operating system.  To synchronize your PC clock with the Hong Kong Observatory's network time server, please follow the steps below:

1. Click "Date and Time" in "Control Panel";

2. Click the "Internet Time" tab;

3. In the box named "Server", type the name of the Observatory's network time server "stdtime.gov.hk";

4. To synchronize your PC clock, click "Update Now".

Please note that the "Update Now" button does not function unless the "Automatically synchronize with an Internet time server" check box is selected.