Ethiopian time keeping is peculiar all over.
https://en.wikipedia.org/wiki/Ethiopian_calendar
The Ethiopian calendar has twelve months, all thirty days long, and five or six epagomenal days, which form a thirteenth month.
https://en.wikipedia.org/wiki/Ethiopian_calendar
The Ethiopian calendar has twelve months, all thirty days long, and five or six epagomenal days, which form a thirteenth month.
I like that Tolkien’s legendarium got the first mention here though.
Sometimes priests moved these days to suit political shenanigans.
Caesar ended this madness and "rationalised" the system, coincidentally making his year-long consulship last for 446 days.
The west inherits from the Romans, and Julius Caesar standardized away the Roman intercalary month by glomming it into Feburary. Before that a "priest" (the pontifex maximus) (in scare-quotes because it was a political office) would add that month on an ad-hoc basis. Not so different!