GNSS systems availability

Have you ever ben looking for web service showing the actual GNSS systems or services availability?

The immediate information about the global navigation satellite system (GNSS) availability can be influenced by many factors. Most known are for example the health status of the satellites, accurate timing, visibility of satellites or signal coverage.

Agencies providing the GNSS services and 100% covering the most of the Earth are at this moment the US GPS and Russian GLONASS systems. The European Galileo is already in its initial operation phase, but it is still in building process. But I consider it as available system, so I have included it below.

Maybe you will find the following links useful – just click on the logo of respective GNSS system:

If you have any other useful links or information, then you can share it as your comment below this article.

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Cite this text:
Jozef Kozár, PhD (July 15, 2024) GNSS systems availability. Retrieved from
"GNSS systems availability." Jozef Kozár, PhD - July 15, 2024,
Jozef Kozár, PhD May 10, 2017 GNSS systems availability., viewed July 15, 2024,<>
Jozef Kozár, PhD - GNSS systems availability. [Internet]. [Accessed July 15, 2024]. Available from:
"GNSS systems availability." Jozef Kozár, PhD - Accessed July 15, 2024.
"GNSS systems availability." Jozef Kozár, PhD [Online]. Available: [Accessed: July 15, 2024]
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Dr. Jozef Kozár

Author, Research Scientist, Consultant.

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1 Response

  1. Avatar photo Jozef says:

    For Galileo I have found also the “constellation status” information:

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