Feeling Grumpy about Pi Day - Numberphile

TL;DR

Pi Day should be July 22nd (22/7 ≈ π), because March 14th only works using the American "middle-endian" date format that almost no other country uses.

Key Points

• 1.22/7 is a better approximation of π than 3.14, and the day-month format (22/7) is used by most of the world, making July 22nd the stronger candidate for Pi Day.
• 2.American date formatting (month/day) is called "middle Indian" — starting with the middle unit of time — and the professor argues there is no logical justification for it.
• 3."Little Indian" (day/month) is practical because people most often need to know the day; "Big Indian" (year/month/day) is useful for sorting data chronologically.
• 4.Astronomers bypass the whole debate using Julian Dates — a simple running count of days — so time differences between events are calculated by straightforward subtraction.