It synchronizes your PC clock using Web access method. This technology makes it fool compatible with proxies and firewalls that can prevent NTP protocol synchronization.

And it is this fact that defines the way the program works: the program runs when Windows starts, checks whether synchronization has been done this day already, and stops immediately if so.

Otherwise the program checks for Internet connection, then tries to synchronize your clock and ends its work if succeeded. So as you see mostly the program is idle and is not wasting resources of your PC.

The unique Time Offset feature of the program allows setting up your PC clock to gain or to lose for a specified interval. Some of our users value this feature greatly.

• PC Atomic Sync 3.
  (*) It is an atomic clock synchronizer with some useful features (time offset, synchronize periods, etc.). The main idea of the program is to synchronize your PC's clock in the...

• On-Time Atomic Clock Sync 2.0
  Synchronize your PC's clock with internet atomic clock servers

• WebTime 2000 3.8
  WebTime is a small utility program that will synchronize your PC's internal clock with one of the several atomic clocks maintained by the United States National Institute of Standards and Technology.

• ClockWork 1.
  ClockWork 1