Snow season is here: Mammoth Mountain and Squaw Valley Alpine Meadows are already open, while Heavenly, Northstar, and Kirkwood open on Nov. 23—and Big Bear and Snow Summit should be open within a few weeks.

As you start getting your snow gear out of the closet, put these key dates on your calendar:

December 31
A lot of California ski resorts throw huge NYE parties: At Squaw Valley Alpine Meadows, the all-day party starts with a Dawn Patrol with Jonny Moseley, and ends with fireworks and a glow stick parade; Northstar Village party has its own fireworks while Kirkwood does its annual Torchlight Parade, also with fireworks. At Snow Summit, you can ski after dark in one of its cool Night Sessions (which actually run every night from Dec. 22–Jan. 6).

January 17–21
Mammoth is hosting the U.S. Freeski & Snowboard Grand Prix again this year—but this time, it’s carries even bigger weight, as the final qualifier for the Olympic ski and snowboard teams before the Games in Pyeongchang. It’s also a primo time to see Mammoth team stars like Chloe Kim, Shaun White, and Kelly Clark.

March 1–11
Tahoe’s Snowfest always means live music, the Snow Queen contest, and fireworks. As part of this year’s festivities, Squaw Valley Alpine Meadows will also host the National Brotherhood of Skiers Black Summit, the nation’s biggest celebration of diversity in snow sports.

Check out our list of 2017-18 California snow events, which includes everything from family festivals to pond skims.