From the developer: "WebTimeSync connects to one of the NIST Internet time servers and updates your computer's clock. WebTimeSync checks for updates through the Help menu. It minimizes to your system tray and automatically updates your computer's clock at an interval you set. The program also supports custom time servers. There is a Disconnect After Update option for those running dial-up connections, and more.
"The Version 6.0 release adds a host of new features including: a simpler, more accessible user interface, better handling of errors, a new help system, restoring of the tray icon after an Explorer crash and much more."