Pi day would be 3rd day of 14th month of year 15. Today is the 14th day of the 3rd month of 2015--or 2015-03-14 in ISO. No pie for you.

Mar 14, 2015 · 1:00 PM UTC

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Replying to @eddelbuettel
@eddelbuettel this is american pi day. We should campaign for a 31-day April.
Replying to @eddelbuettel
@eddelbuettel +1 or month 3.14159 = March 4th. Either way, not today. But still went to great party!