All Events at Disneyland during January and December of 2016, 2018, 2019 and 2021

January 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.

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, U.S.A. : 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.

January 2018

Nov. 03 - Jan. 07a bug's land : Disney California AdventureSneak Peek of "Coco" A sneak peek with enhanced effects of the film "Coco" will be shown in the "It's Tough to Be a Bug" Theater. The movie opens in theaters on November 22.
Nov. 10 - Jan. 07Resort Wide : Disneyland ResortHolidays at the Disneyland Resort Returning favorites during the November 10, 2017 to January 7, 2018 holiday celebration include "A Christmas Fantasy" Parade and "Believe...in Holiday Magic" fireworks at Disneyland and "World of Color - Season of Light", "Viva Navidad!", and "Festival of Holidays" at Disney California Adventure.
Nov. 10 - Jan. 07Disney California Adventure : Disneyland ResortFestival of Holidays Returns for the 2017 holiday season with special entertainment and food and beverage kiosks celebrating holiday traditions around the world.
Jan. 05 - Mar. 06Downtown Disney : Downtown DisneyStar Wars: Secrets of the Empire Star Wars: Secrets of the Empire is a hyper-reality experience coming to Downtown Disney that will allow guests to walk through the Star Wars universe, combining physical sets with real-time interactive special effects. In groups of four, teams will go undercover as Stormtroopers to capture Imperial intelligence vital to the rebellion's survival. Tickets are on sale at http://www.thevoid.com
Jan. 18Disneyland Park : Disneyland ResortDisneyland After Dark: "Throwback Nite" The first in a 2018 series of Disneyland After Dark events is "Throwback Nite" on January 18. This is an after-hours event that requires a separate admission tickets. Tickets are $95 and go on sale on November 30 to Annual Passholders and on December 7 to the general public.
Jan. 26 - Feb. 18Disney California Adventure : Disneyland ResortLunar New Year Celebration The Lunar New Year celebration at Disney California Adventure expands to 24 days in 2018, from Friday, January 26 through Sunday, February 18. Highlights include "Mulan's Lunar New Year Procession", the World of Color pre-show "Hurry Home - Lunar New Year Celebration", live musical performances, and meet and greets with Disney characters such as Mickey, Minnie, Goofy, Pluto, Mushu, and Mulan, dressed in the Lunar New Year attire. Foods inspired by Chinese, Korean, and Vietnamese cultures will be available at three Asian marketplaces, and the Paradise Garden Grill will feature a Lunar New Year menu.

December 2018

Nov. 09 - Jan. 06Resort Wide : Disneyland ResortHolidays at Disneyland The holiday season at the Disneyland Resort will be celebrated from November 9, 2018 through January 6, 2019.

January 2019

Nov. 09 - Jan. 06Resort Wide : Disneyland ResortHolidays at Disneyland The holiday season at the Disneyland Resort will be celebrated from November 9, 2018 through January 6, 2019.
Jan. 25 - Feb. 17Disney California Adventure : Disneyland ResortDisney California Adventure Lunar New Year 2019 Lunar New Year will be celebrated at Disney California Adventure from January 25 through February 17. Special entertainment includes Mulan's New Year Procession which will also feature the Three Little Pigs in recognition of the Year of the Pig. During the 24-day celebration special foods, merchandise, and cultural performances will also be available.

December 2019

Nov. 08 - Jan. 06Disney California Adventure : Disneyland ResortDisney California Adventure Festival of Holidays 2019 The Festival of Holidays celebrates holiday traditions around the world with food, beverages, and entertainment.

January 2021

No Events Announced for this Month Yet

December 2021

Nov. 11 - Dec. 9Disneyland Park : Disneyland Resort2021 Disney Merriest Nites
Nov. 14, 2021 - Jan. 9, 2022Disney California Adventure : Disneyland Resort2021 Disney Festival of Holidays at Disney California Adventure