When: The window opens January 1 and runs through the end of March. When the ideal day approaches, the contest will be called with 48-hour notice.

Where: Mavericks is located off Pillar Point at the edge of Princeton Harbor, some four miles north of Half Moon Bay

There will be a day-of-the-event festival outside the Oceano Hotel in Princeton, featuring big-screen live streaming, music, food, and the awards ceremony.
http://blog.sfgate.com/threedotblog/2014/12/13/lowdown-on-the-mavericks-surf-contest/