It might not be obvious, but the date on the gpsjam page is an input field: You can change it and see the map for any day. If you do that, you'll quickly see that Cyprus is constantly, always being jammed.
I discovered GPSJam a few months ago, and have enjoyed some of your content on Twitter, and really enjoyed your work on the longer form article from a few years ago (the FBI one; "Secrets of the Sky") [0].
Best wishes for your endeavors!
[0] - for anyone curious: https://twitter.com/lemonodor/status/1250581745935593472 or https://docs.google.com/presentation/d/1sowJrQQfgxnLCErb-CvU...