All Events at Disneyland during March and December of 2016 and 2021

March 2016

Nov. 16 - TBATomorrowland : Disneyland ParkSeason of the Force Star Wars overlay, featuring Star Wars Launch Bay, Hyperspace Mountain, Path of the Jedi, and Star Wars-inspired foods at The Galactic Grill.
Early 2016 - May 6Adventureland : Disneyland ParkJungle Cruise Reopens May 6 after an extensive refurbishment.
March 2 - 27Fantasyland : Disneyland ParkEgg-stravaganza expanded this year with a new map available for an Easter Egg hunt in Downtown Disney, as well as the traditional hunts in Disneyland and Disney California Adventure. Maps are available at selected locations for $5.95 through March 27 or while supplies last.
Mar. 02 - Mar. 31Resort Wide : Disneyland ResortEggs-travaganza This year's event is expanded with a new map available for an Easter Egg hunt in Downtown Disney, as well as the traditional hunts in Disneyland and Disney California Adventure. Maps are available at selected locations for $5.95 through March 31 or while supplies last.
Mar. 18 - Apr. 15a bug's land : Disney California AdventureJungle Book Sneak Peek The Bugs Land theater is showing a sneak peek of The Jungle Book, which opens on April 15.

December 2016

http://land.allears.net/blogs/dnews/2016/09/new_merriment_coming_to_the_di.html - Jan. 08Resort Wide : Disneyland ResortHolidays at the Disneyland Resort Festive decorations resort-wide, including Christmas trees and gingerbread houses. Holiday parade and fireworks show in Disneyland, and the new World of Color - Winter Dreams and Festival of Holidays celebration in Disney California Adventure. Holiday themed versions of Jungle Cruise, Haunted Mansion, and "it's a small world". Special treats and menu items in both theme parks. Meet and Greet opportunities with holiday costumed characters and Santa Claus. Ice skating rink in Downtown Disney.
Nov. 10 - Jan. 08Disney California Adventure : Disneyland ResortFestival of Holidays Celebrate holidays around the world from November 10, 2017-January 7, 2018. Daily activities around Disney California Adventure include festival themed food and beverage booths, performances by guest musical groups, and the returning Viva Navidad! celebration.
Nov. 10 - Jan. 08Pixar Pier : Disney California AdventureWorld of Color - Season of Light This new World of Color show celebrates the season with holiday music and memorable moments from Disney animated movies.
Nov. 11 - Jan. 01Disneyland Park : Disneyland ResortPaint the Night Parade The Paint the Night Parade will return to Disneyland on select nights during the holiday season. Performance dates are currently on the Disneyland calendar are November 18-27, December 2-4, December 9-11. It's expected that the parade will run daily from December 16-January 1.
Dec. 03 - Dec. 04Main Street USA : Disneyland ParkCandlelight Processional The Christmas story told in music and readings from the Bible. Featuring a mass choir, full orchestra, and guest narrator, performed from the Main Street Train Station. Performance times and narrators are TBD.

March 2021

No Events Announced for this Month Yet

December 2021

No Events Announced for this Month Yet