Pi Day is celebrated on 3.14 (March 14th), often at 1:59pm. A rather obscure and geeky holiday, it is popular among scientists and at universities. Various celebrations have been held in Davis on different years.
These were found on the bulletin board next to the Experimental College on March 14, 2005 — the same number as the first three digits of pi. The posters claim to be affiliated with the Campus Crusade for Chaos and Confusion but have a slightly different flavor to them. For one thing, they are less confusing.
There was also a poster with this nursery rhyme on it:
Sing a song of circles a pocket near your thigh,
Three point one four blackbirds baked in a pi.
When the pi was opened Euler began to sing,
Oh wasn't that a rounded dish to set before the king?
2006-03-16 21:21:28 I approve! :-) —ErikAnderson
2006-04-14 11:38:44 LOL —TusharRawat
2006-04-14 16:22:30 Cute. —DavisWikiGnome
2008-10-21 23:01:00 Pi day is well celebrated in Davis, even outside of the university... —StephenHudson
2009-01-23 17:03:11 Pi day is my birthday! I hear they serve pie at the Exploratorium, though I've never made it out there in time for it. —HiL1iLL