∏ Day!

The Americans think that ∏ day is 14 March but that is only because they write it 3.14 whereas any sensible person writes the date in ascending (or descending) order. The American conventions is just as bad as saying twenty past eight and 12 seconds (20:8:12 instead of 8:20:12). You can say "twenty past eight" but that doesn't mean that you have to write it that way.

Anyway, today is 22/7 which is a classic approximation for π. How fun.