Yes and they were wrong. There’s a whole “misconceptions programmers have about dates” you might want to read. The only number for dates is the Unix timestamp.
So if I want to have a style per month or something in my program, I'm wrong? If I want to select the next month's style I have to do something awkward like `(current mod 12) + 1` instead of the more natural `(current + 1) mod 12`?