"In 2025, geocachers can earn the Pi Day souvenir by finding and logging any Mystery Cache between Friday, March 14 and Sunday, March 16. To make this holiday extra sweet, all non-Premium Mystery Caches are open to everyone throughout the weekend on the Geocaching® app from 11:00:00 UTC on Friday, March 14 until 10:00:00 UTC on Monday, March 17, 2025." - Geocaching HQ
Here's a slightly different version of the old nursery rhyme:
North 42 09.ABC
West 71 12.DEF