On March 12, 2009, the U.S. House of Representatives passed a non-binding resolution (HRES 224),[4] recognizing March 14, 2009 as National Pi Day.
In the year 2015, Pi Day had special significance on 3/14/15 (mm/dd/yy date format) at 9
53 a.m. and also at p.m., with the date and time representing the first 10 digits of π.
https://en.wikipedia.org/wiki/Pi_Day
In the year 2015, Pi Day had special significance on 3/14/15 (mm/dd/yy date format) at 9

https://en.wikipedia.org/wiki/Pi_Day