A reminder to non-Americans: assigning Pi Day to 22nd July is not only more accurate than 3.14 (22/7 is 3.14285), it's also more likely to annoy Americans.
@jameswallis In the name of international harmony, and as a lover of pie, I propose we celebrate Pi Day on both dates. 
@ed1conf @jameswallis I concur. It's the only truly inclusive way to celebrate this/these important day/s. I had pie yesterday and I'll have pie in July.