GPS Service Outages & Status Reports

NOTE: On October 24, 2021, a bug in older versions of the Network Timing Protocol Daemon (NTPD) and GPS Daemon (GPSD) software used in many computer systems may trigger the system date to roll back to sometime in March 2002. While this is not a problem with GPS, it has the potential to cause significant impact. All network operators are encouraged to verify they are utilizing the most recent version 3.23.1 of GPSD/NTPD software (released September 21, 2021) and report any problems to the Navigation Center watch by phone 703-313-5900 or by email at Pin on map For help with wrong/missing addresses, bad directions, and other mapping errors in GPS devices, please visit our page on Address, Route, & Map Problems.
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Experiencing GPS satellite service disruptions, degradation, or position/time anomalies?

We can help. Choose the type of user you are:

Civilian User Support — Non-Aviation


The U.S. Coast Guard Navigation Center (NAVCEN) is the designated point of contact for providing operational GPS user support to the civilian community. The following links lead to the NAVCEN website.

If you suspect a GPS disruption due to illegal signal jamming, please report it to the FCC in addition to NAVCEN. Learn more at

Civilian User Support — Aviation

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Civil aviation users should contact the Federal Aviation Administration (FAA) for GPS user support within the United States. For aviation GPS support outside the United States, please contact NAVCEN. The following links lead to pages on the FAA website.

Military User Support

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The GPS Operations Center (GPSOC) at Schriever Air Force Base, Colorado, is the focal point in the Department of Defense (DOD) for operational issues and questions concerning military use of GPS. The GPSOC, part of Air Force Space Command, provides DOD and allied GPS users worldwide with anomaly reports and other information 24 hours a day, seven days a week.

The GPSOC is responsible for:

The GPSOC interfaces with the civil community through NAVCEN and FAA.

Visit GPSOC website (may not open for non-military users)

The responsibilities of the three GPS user support agencies (NAVCEN, FAA, and GPSOC) are documented in an interagency agreement. View it

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