Mobian calendar

The main notation is DD/MM/YYYY, with slashes: 10/12/3236, 19/04/3244, 04/09/3246. When greater precision is unavailable, expressions such as in 3241, in January 3244 or by autumn 3241 are used. An unknown day is not replaced by the first day of the month.

The main project chronology uses the following correspondence:

Mobian year = Earth year AD + 1220.

Decree 044 of 14/01/3243 restored this dating system. Early archival documents contain the years 3241, 3242 and 3243. Encyclopedia accounts of this historical sequence use 3241, 3242 and 3243; original document dating is noted separately where necessary.

The HOI4 Earth timeline uses a separate correspondence: 1936 ↔ 3246, 1937 ↔ 3247. The +1220 formula does not apply to Earth dates in that scenario. A combined date may be written 3247 / 1937 in the HOI4 Earth timeline.