| 1. | The Time of Internet | | | Explains the Network Time Protocol and provides links to implementations for various systems.
toi.iriti.cnr.it |
| 2. | Network Time Services | | | Information on the services provided by the U.S. Naval Observatory, Washington, DC.
tycho.usno.navy.mil |
| 3. | Network Time Protocol (NTP) | | | The reference implementation from the maintainer of the protocol. Also includes a list of public NTP servers.
www.eecis.udel.edu |
| 4. | NIST Web Clock | | | Shows the official US time in each time zone.
www.time.gov |
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