GPS satellite outages are determined by the US Air Force using a Notice Advisory to Navstar Users (NANU). NANUs are categorized by their type and can represent forecasted, current or summary outages. See the full list of outage types on the CelesTrak website.
GPS satellite outages identified as current by the US Air Force. Current outage types are usually reserved for unscheduled outages.
There are no current outages at this time.
GPS satellite outages identified as predicted by the US Air Force.
| PRN | SVN | NANU | Type | Outage start | Outage stop | Duration |
|---|---|---|---|---|---|---|
| 18 | 34 | 2019156 | FCSTUUFN | Oct 07, 2019 20:00:00 | Dec 31, 9999 23:59:59 | Infinity |
| 23 | 60 | 2020010 | FCSTUUFN | Mar 09, 2020 15:30:00 | Dec 31, 9999 23:59:59 | Infinity |
| 25 | 62 | 2020022 | FCSTDV | May 28, 2020 11:25:00 | May 28, 2020 23:25:00 | 00d:12h:00m:000s |
GPS satellite outages identified as historical by the US Air Force, occurring within the last month.
| PRN | SVN | NANU | Type | Outage start | Outage stop | Duration |
|---|---|---|---|---|---|---|
| 21 | 45 | 2020020 | FCSTSUMM | May 08, 2020 01:24:00 | May 08, 2020 07:44:00 | 00d:06h:20m:000s |
| 18 | 75 | 2020023 | FCSTSUMM | May 14, 2020 15:57:00 | May 14, 2020 23:05:00 | 00d:07h:08m:000s |
| 22 | 47 | 2020024 | FCSTSUMM | May 22, 2020 05:11:00 | May 22, 2020 12:27:00 | 00d:07h:16m:000s |
Last checked for outage data: 2020-05-24 21:12:09Z
GPS outages in a calendar format from AGI can be found here:
Historical GPS Outages can be found here:
Gps Basics
The basics of how GPS works with some technical content.
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Operational Considerations for Improved Accuracy with an IOC Galileo Constellation
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