Making of Better Calendars
Our current Gregorian calendar is all sorts of messed up.
First, the month names make no sense for September (7), October (8), November (9), and December (10). Second, All the months have between 30 and 31 days except February which has 28 except sometimes:
Every year that is exactly divisible by four is a leap year, except for years that are exactly divisible by 100, but these centurial years are leap years if they are exactly divisible by 400.
I'm not saying we should change it, but if we had to start over, we could do better. I figured it'd be a fun challenge to figure out how to calculate which day a specific date would be in other calendar systems.
That's how Better Calendars started.
At first, I wanted to do the two calendars you can see on the site (the International Fixed Calendar and the World Calendar) and a third one, a decimal calendar. That third calendar ends up being so messy that I didn't find it worth it to spend time on it.
I also implemented a decimal clock, because, as opposed to the decimal calendar, that one does make a lot of sense.