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| Blue Switch Day | |
|---|---|
 A graph showing the accuracy of GPS on the day Selective Availability was turned off | |
| Observed by | Geocachers |
| Type | Group |
| Celebrations | Geocaching to earn an in-app souvenir |
| Observances | Celebrates anniversary of the day Selective Availability was turned off. |
| Date | 2 May |
| Next time | 2 May 2025 |
| Frequency | Annual |
Blue Switch Day is a holiday celebrated by Geocachers that marks the anniversary of the day that Selective Availability was turned off, and the Global Positioning System was made available to the general public.[1] The day is celebrated on May 2 annually. Prior to May 2 2000, GPS had limited accuracy to non-government personal, making activities like Geocaching impossible.[2]
- ^ Baughman, Dana (8 April 2024). "New souvenir: Blue Switch Day 2024! – Official Blog". Geocaching Blog. Retrieved 3 August 2024.
- ^ "Geocaching | Definition, History, & Facts | Britannica". www.britannica.com. Retrieved 3 August 2024.