Программа для пользователей ПК, которые совсем не наблюдают часов. Atomic Time Synchronizer сверит и синхронизирует ваше время с атомными часами.

Atomic Time Synchronizer (atomic time clock) is a useful and handy utility to keep your PC clock accurate.

It periodically checks and synchronizes your computer clock with NIST atomic time servers, or synchronizes time between computers. It can also act as a time server.

Key Features of Atom Time Synchronizer

Synchronizes time with NIST atomic time servers
Synchronizes time between computers
Can act as a time server
Proxy support: Socks4/Socks4A/Socks5/HTTP New

Supports SNTP (the Simple Network time protocol)
Supports the TIME protocol
Can be invoked at the command line, and called in batch files
Can synchronize time with any server running SNTP or TIME protocol
Periodically checks and synchronizes time

Displays time in either local time or UTC/GMT
Can monitor Windows time change event, and adjust automatically
Easy to use and configure
Nice-looking interface

homepage: http://www.lmhsoft.com/timesync/