All Closures and Refurbishments at Disney California Adventure or Tomorrowland in Disneyland during January, March and June of 2017, 2020 and 2022

January 2017

Jan. 02 - May. 26Hollywood Land : Disney California AdventureNew Guardians of the Galaxy theme for the Tower of Terror The Tower of Terror will be re-imagined into a new Guardians of the Galaxy - Mission: BREAKOUT! attraction, scheduled to open on May 27,2017
Jan. 09 - Mar. 22Grizzly Peak : Disney California AdventureGrizzly River Run Closed for refurbishment
Jan. 17 - Feb. 23Grizzly Peak : Disney California AdventureRedwood Creek Challenge Trail Closed January 17 for refurbishment.

March 2017

Jan. 02 - May. 26Hollywood Land : Disney California AdventureNew Guardians of the Galaxy theme for the Tower of Terror The Tower of Terror will be re-imagined into a new Guardians of the Galaxy - Mission: BREAKOUT! attraction, scheduled to open on May 27,2017
Jan. 09 - Mar. 22Grizzly Peak : Disney California AdventureGrizzly River Run Closed for refurbishment
Feb. 06 - Mar. 05Pixar Pier : Disney California AdventureMickey's Fun Wheel Closed for refurbishment.
Feb. 21 - Mar. 05Pixar Pier : Disney California AdventureWorld of Color Closed for refurbishment.
Mar. 20 - Mar. 22Tomorrowland : Disneyland ParkAutopia Closed March 20-22 for refurbishment

June 2017

May. 30 - Jun. 09Hollywood Land : Disney California AdventureTurtle Talk with Crush Closed for refurbishment
May. 30 - Jul. 27Hollywood Land : Disney California AdventureSorcerer's Workshop Closed for refurbishment

January 2020

Mar. 19 - Opening 2020a bug's land : Disney California AdventureIt's Tough to be a Bug Closed March 19, 2018, to be replaced by the new Marvel Super Heroes area, opening in 2020.
Mar. 20 - Opening 2020a bug's land : Disney California AdventureMarvel Super Heroes-Themed Land The Guardians of the Galaxy will be joined by Spider-Man and the Avengers in what will become a completely immersive Super Hero universe. This new land, opening in 2020, will be anchored by the Guardians of the Galaxy - Mission: BREAKOUT!, in the adjacent space that is currently occupied by "a bug's land." "It's Tough to Be a Bug" closed March 19; the rest of the land will close September 5.
Sep. 05 - Permanent Closurea bug's land : Disney California AdventureBug's Land Closure "A bug's land", including Flik's Fun Fair, will be closing permanently starting September 5. The area will be re-imagined as Marvel Super Heroes land, opening in 2020.
Apr. 01 - Returning in 2020Buena Vista Street : Disney California AdventureRed Car Trolley Closed for refurbishment in preparation for the opening of the Marvel Super Heroes land. The Red Car Trolley will return sometime in 2020.

March 2020

Mar. 19 - Opening 2020a bug's land : Disney California AdventureIt's Tough to be a Bug Closed March 19, 2018, to be replaced by the new Marvel Super Heroes area, opening in 2020.
Mar. 20 - Opening 2020a bug's land : Disney California AdventureMarvel Super Heroes-Themed Land The Guardians of the Galaxy will be joined by Spider-Man and the Avengers in what will become a completely immersive Super Hero universe. This new land, opening in 2020, will be anchored by the Guardians of the Galaxy - Mission: BREAKOUT!, in the adjacent space that is currently occupied by "a bug's land." "It's Tough to Be a Bug" closed March 19; the rest of the land will close September 5.
Sep. 05 - Permanent Closurea bug's land : Disney California AdventureBug's Land Closure "A bug's land", including Flik's Fun Fair, will be closing permanently starting September 5. The area will be re-imagined as Marvel Super Heroes land, opening in 2020.
Apr. 01 - Returning in 2020Buena Vista Street : Disney California AdventureRed Car Trolley Closed for refurbishment in preparation for the opening of the Marvel Super Heroes land. The Red Car Trolley will return sometime in 2020.
February 24 expected - March expectedPixar Pier : Disney California AdventureJessie's Critter Carousel General refurbishment; details unknown

June 2020

Mar. 19 - Opening 2020a bug's land : Disney California AdventureIt's Tough to be a Bug Closed March 19, 2018, to be replaced by the new Marvel Super Heroes area, opening in 2020.
Mar. 20 - Opening 2020a bug's land : Disney California AdventureMarvel Super Heroes-Themed Land The Guardians of the Galaxy will be joined by Spider-Man and the Avengers in what will become a completely immersive Super Hero universe. This new land, opening in 2020, will be anchored by the Guardians of the Galaxy - Mission: BREAKOUT!, in the adjacent space that is currently occupied by "a bug's land." "It's Tough to Be a Bug" closed March 19; the rest of the land will close September 5.
Sep. 05 - Permanent Closurea bug's land : Disney California AdventureBug's Land Closure "A bug's land", including Flik's Fun Fair, will be closing permanently starting September 5. The area will be re-imagined as Marvel Super Heroes land, opening in 2020.
Apr. 01 - Returning in 2020Buena Vista Street : Disney California AdventureRed Car Trolley Closed for refurbishment in preparation for the opening of the Marvel Super Heroes land. The Red Car Trolley will return sometime in 2020.

January 2022

Jan. 10 - Jan. 13Disney California Adventure : Disneyland ResortThe Little Mermaid: Ariel’s Undersea Adventure Disneyland's website does not list operating hours for The Little Mermaid: Ariel’s Undersea Adventure from Monday, January 10th through Thursday, January 13th, 2022.
Jan. 24 - Spring 2022Disney California Adventure : Disneyland ResortGrizzly River Run Grizzly River Run will close for refurbishment starting January 24, 2022. The attraction is projected to reopen sometime in spring 2022.

March 2022

Jan. 24 - Spring 2022Disney California Adventure : Disneyland ResortGrizzly River Run Grizzly River Run will close for refurbishment starting January 24, 2022. The attraction is projected to reopen sometime in spring 2022.

June 2022

2022 - TBDDisney California Adventure : Disneyland ResortSilly Symphony Swings Silly Symphony Swings is currently closed for refurbishment in Disney California Adventure. A reopening date has not yet been announced.
May 2 - TBDDisney California Adventure : Disneyland ResortAnimation Academy Animation Academy will close in Disney California Adventure on May 2nd, 2022. A reopening date has not yet been announced.
June 13 - June 16Disney California Adventure : Disneyland ResortMater’s Junkyard Jamboree Mater’s Junkyard Jamboree will be closed for refurbishment from June 13th to 16th, 2022.