All Events at Disneyland during June and December of 2016, 2020 and 2021

June 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.
May. 06 - Jun. 12Hollywood Land : Disney California AdventureSneak Peak of Alice Through the Looking Glass Starting on May 6, the preview of "Alice Through the Looking Glass" will be presented in 3D with special in-theater effects at the Sunset Showcase Theater (formerly Muppets Theater).
May. 13 - Jun. 17Disney California Adventure : Disneyland ResortGrad Nites Grad Nites are a private event taking place at Disney California Adventure on select nights in May and June from 10:00 p.m. to 2:00 a.m. The dates for 2016 are: May 13, 14, 18, 20, 21, 23, 25, 31 June 1, 3, 4, 7, 8, 10, 11, 15, 17 DCA closes at 9:00 p.m. on all party evenings.
Jun. 16Resort Wide : Disneyland ResortShanghai Disneyland Grand Opening The grand opening of Shanghai Disneyland on June 16 will be celebrated at the Disneyland Resort. Details have not yet been released.
Jun. 16 - Aug. 13Disneyland Park : Disneyland ResortDisneyland All-American College Band This talented group of college students performs Tuesdays-Sundays for about 10 weeks during the summer. Performances are in various areas in both parks, and include a jazz set as well as marching band performances.
Jun. 17Condor Flats : Disney California AdventureSoarin' Around the World Opens Soarin' Around the World, with a new film featuring spectacular aerial scenes from all over the world, opens on June 17, 2016.

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.

June 2020

Summer 2020Disney California Adventure : Disneyland ResortAvengers Campus Phase 1 Opens When you visit Avengers Campus you will become part of an interconnected story that includes California Adventure, Disneyland Paris, and Hong Kong Disneyland. On each campus the Avengers will be looking for and recruiting people to join them.

December 2020

No Events Announced for this Month Yet

June 2021

No Events Announced for this Month Yet

December 2021

No Events Announced for this Month Yet