iTimeSync

If you need to ensure the clock of your PC, or even your entire LAN, is always accurate, iTimeSync is the software you need. With no need for any configuration, simply run the program and select "Correct" to manually synchronize your clock. However, should you prefer automatic synchronization, iTimeSync can be set to do so within any minute, hour or day period. Furthermore, you can choose to run it as a Windows Service, which will make it run automatically and without interruption in the background.

Featuring support for both TIME (RFC-868) and SNTP (RFC-2030) protocols, iTimeSync also allows you to sync your time from another copy of iTimeSync from a different computer or LAN. The default server names are included, but you have the flexibility to change them as necessary to servers that are closer to your location.

Additional features of iTimeSync include time zone data display, time zone lock, server scan, detailed logging, auto advance to another server if the selected one fails, auto start, minimize to tray, check without change, correct only minutes and seconds mode, variable time-out, max/min times, and a positive or negative time offset can be set if you are in an obscure time zone or prefer a faster or slower clock.

With a focus on maximum efficiency and speed, iTimeSync is written in Assembly. Overall, it's easy to use, customizable, and efficient, making it an ideal choice for anyone looking to synchronize their clock.