One of the things I've really come to like about the Bay Area is the great number of things that happen. Things happen pretty often. Sometimes these happenings happen to happen at the same time, and that can get confusing. So here's a calender of the rough times that things happen, so that when they happen and you happen to be there, you may have a happening time.

Easter Sunday - Bring Your Own Big Wheel Race
April 12th (or thereabouts) - Yuri's Night
Late April/Early May - Maker Faire
November 1º o 2º - Dia de los Muertos
December 15th - Santarchy