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GPS Satellite Outage Information

All information on this page is taken from the GPS Satellite Outage File and SEM almanacs produced by the US Air Force 2nd Space Operations Squadron, who operates the GPS Constellation.

Satellite Outage File (SOF) Details

The current SOF is available from CelesTrak here: 2016_036_141811_v01.sof
The latest check for a SOF was on: 2016 February 7, 12:48:59
The SOF was last retrieved on: 2016 February 7, 05:59:12

GPS Satellite Outage Calendar

Historical outages are colored black, Predicted outages are colored gold, Current outages are colored red

     
JanuaryFebruary 2016March
SuMoTuWeThFrSa
12345
PRN 32
B 13:38
6
PRN 32
7
PRN 32
8
PRN 32
9
PRN 32
10
PRN 32
11
PRN 32
12
PRN 32
13
PRN 32
14
PRN 32
15
PRN 32
16
PRN 32
17
PRN 32
18
PRN 32
19
PRN 32
20
PRN 32
21
PRN 32
22
PRN 32
23
PRN 32
24
PRN 32
25
PRN 32
26
PRN 32
27
PRN 32
28
PRN 32
29
PRN 32

Current GPS Outages

Current Outages
PRNSVNOutage TypeReferenceOutage Start Time
3270UNUSUFN20160112/5/2016 1:38:00 PM

Predicted GPS Outages

No Predicted Outages

Historical GPS Outages

A GPS historical outage table can be accessed from the link below. The historical outages table contains all GPS outages since 1998.

Historical Outages

GPS Satellite Health Information

The information below shows the number of healthy GPS satellites, since 1998. The number of satellites in the GPS constellation comes from the SEM almanac for that day. The number of unhealthy satellites for that day comes from the Satellite Outage File. The SOF outages are subtracted from the number of satellites in the constellation to get the number of healthy satellites.

The list of unused PRN numbers come from those PRNs not listed in the SEM almanac.

Number of GPS satellites in the latest almanac: 30
Number of unhealthy GPS satellites in the SOF: 1
Current number of healthy GPS satellites: 29
Unused PRN number(s): 4, 32

Healthy GPS Satellites Graph

This graph plots the number of healthy GPS satellites since 1998 (Full History), or over the last 365 days.

Note that since this is calculated on a daily boundary, this graph will show sequential outages in a single day as concurrent, and may not reflect the more updated statistics above.