This is a list of geohashing expeditions in which Jan participated.
2015-04-07 52 8, located next to the Autobahn 1 on a field near Märschendorf. - 2015-04-10 52 8, located on a field near Hausstette.
- 2015-04-19 52 8, located on a field near Vechta.
- 2015-06-12 52 8, located in a field of wheat near Gehrde.
- 2015-08-13 52 7, located on a plowed field between Löningen and Essen in Oldenburg.
- 2015-08-17 52 7, located in a cornfield between Lastrup and Essen in Oldenburg.
- 2018-09-15 52 7, located in a forest near Herbergen.
- 2018-10-10 52 8, located in a forest near Quakenbrück.
- 2018-10-14 52 8, located on a field near Tenstedt.
- 2019-03-03 52 8, located on a field in Carum.
2019-03-17 52 8, located on a field in Calhorn. (No public access)- 2019-03-18 52 8, located on a field next to a forest in Dinklage.
- 2019-05-05 52 7, located on a field of asparagus in Brokstreek.
- 2019-12-09 52 8, located in a forest in Nordholte.
- 2019-12-15 global, located in a forest in Burg Stargard.
- 2020-01-22 52 8, located on a field in Gut Lage.
- 2020-04-11 52 8, located on a field in Addrup.
