htpdate

Time synchronization over http utility

The HTTP Time Protocol (HTP) is used to synchronize a computer's time with web servers as reference time source. Htpdate will synchronize your computer's time by extracting timestamps from HTTP headers found in web servers responses. Htpdate can be used as a daemon, to keep your computer synchronized. Accuracy of htpdate is usually better than 0.5 seconds (even better with multiple servers). Htpdate can also work through http proxy.