That was my thought reading this list too. I am sure every calendar system will have a list of calendrical fallacies like this. But if you do decide to support

That was my thought reading this list too. I am sure every calendar system will have a list of calendrical fallacies like this. But if you do decide to support the Hebrew calendar, you will not get “The current year is 2018” wrong. Or the number of digits in a year, if you choose to support the Japanese calendar. Actual fallacies in those systems will be less obvious.