Of course - no doubt there are many schemes! I have found this to be by far the most common
At our startup, it's even more complicated :) we use calendar year for official financial / business metrics, while our planning quarter is offset by 1 month (Q1 = Feb/Mar/Apr).
Most of the times it's some shadow-Greg calendar that's slightly out of phase. E.g., I think my 2025Q1 starts on 1 Mar? I've never been entirely sure.
Intel used some "work week" concept that I never figured out the rules for, in the entire time I worked there, beyond that it wasn't ISO weeks.
The spirit of the idea is neat, though, and I should build something like this internally but using whatever esocalendar we're using… then I'd be able to remember whether we're +1 mo, +2 mo, 1Y-1mo … or whatever … out of phase with normal people.
> The International Fixed Calendar divides the year into 13 months of 28 days each. A type of perennial calendar, every date is fixed to the same weekday every year. Though it was never officially adopted at the country level, the entrepreneur George Eastman instituted its use at the Eastman Kodak Company in 1928, where it was used until 1989.
Might it have been something along that line?