All Events, Closures and Refurbishments at Disneyland Park or Resort Wide in Disneyland during May and October of 2016, 2021 and 2022

May 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.
Jan. 10 - Jul. 29Frontierland : Disneyland ParkRivers of America Attractions Disneyland Railroad and most Rivers of America attractions (including Fantasmic!) are closed temporarily to make room for the construction of the new Star Wars land. Pirate's Lair on Tom Sawyer Island has re-opened. Fantasmic! opens on July 17. Davy Crockett Explorer Canoes, Mark Twain Riverboat, Sailing Ship Columbia and Disneyland Railroad reopen on July 29.
Jan. 11 - May. 06Adventureland : Disneyland ParkJungle Cruise Removal of holiday overlay and refurbishment.
Apr. 03 - PERMANENT CLOSURETomorrowland : Disneyland ParkAvengers Super Hero HQ Final Day is April 2. The character Meet-and-Greet, featuring Captain America and Spider-Man, will move to Disney California Adventure starting on April 3.
Apr. 11 - May. 19Tomorrowland : Disneyland ParkDisneyland Monorail Closed.
Apr. 18 - May. 06Fantasyland : Disneyland ParkMatterhorn Bobsleds Refurbishment
May. 09 - May. 13New Orleans Square : Disneyland ParkBlue Bayou Refurbishment
May. 09 - May. 15New Orleans Square : Disneyland ParkPirates of the Caribbean Refurbishment
May. 16 - Jun. 09Adventureland : Disneyland ParkTarzan's Treehouse Refurbishment
May. 23 - May. 26Tomorrowland : Disneyland ParkGalactic Grill Refurbishment - presumably to remove the Star Wars overlay.

October 2016

Jan. 10 - Jul. 29Frontierland : Disneyland ParkRivers of America Attractions Disneyland Railroad and most Rivers of America attractions (including Fantasmic!) are closed temporarily to make room for the construction of the new Star Wars land. Pirate's Lair on Tom Sawyer Island has re-opened. Fantasmic! opens on July 17. Davy Crockett Explorer Canoes, Mark Twain Riverboat, Sailing Ship Columbia and Disneyland Railroad reopen on July 29.
Sep. 09 - Oct. 31Resort Wide : Disneyland ResortHalloween Time Special decorations, food items, and character costumes in both theme parks. The Haunted Mansion gets its seasonal makeover to Haunted Mansion Holiday.
Sep. 23 - Oct. 31Disneyland Park : Disneyland ResortMickey's Halloween Party Takes place at Disneyland Park on 17 selected nights on September and October, starting on September 23 with the final party on October 31. This not-so-scary Halloween party is a fun-filled evening for the whole family. In addition to trick-or-treating around the park, costumed character greetings, and Mickey's Halloween Party Character Cavalcade, the event also provides exclusive viewing of the Halloween Screams fireworks show. New this year: the Headless Horseman rides on Main Street prior to the Character Cavalcade.
Oct. 03 - Nov. 03Critter Country : Disneyland ParkCritter Country Refurbishment All Critter Country attractions and locations, including Splash Mountain, Winnie the Pooh and Friends, Hungry Bear Restaurant, Pooh Corner, and The Briar Patch, are closed for refurbishment.
Oct. 24 - Nov. 09Fantasyland : Disneyland Park"it's a small world" Closed for installation of holiday overlay

May 2021

2021 - May 28thNew Orleans Square : Disneyland ParkFantasmic! After a long closure, Fantasmic reopened in Disneyland Park on May 28th.
2019 - Early 2023Disneyland Park : Disneyland ResortMickey & Minnie's Runaway Railway (DLR) The first major Mickey-themed ride-through attraction, is coming to Disneyland’s Mickey’s Toontown in Early 2023 as part of the reimagination of Mickey’s Toontown. The ride will be housed in the El CapiTOON Theater, where Mickey and Minnie are premiering their newest short, Perfect Picnic.
March 14th, 2020 - July 25th, 2022Disneyland Park : Disneyland ResortFinding Nemo Submarine Voyage Finding Nemo Submarine Voyage closed for refurbishment on March 14th, 2020. It will reopen on July 25th, 2022.
April 30Disneyland Park : Disneyland ResortDisneyland Park Reopening

October 2021

2021 - May 28thNew Orleans Square : Disneyland ParkFantasmic! After a long closure, Fantasmic reopened in Disneyland Park on May 28th.
2019 - Early 2023Disneyland Park : Disneyland ResortMickey & Minnie's Runaway Railway (DLR) The first major Mickey-themed ride-through attraction, is coming to Disneyland’s Mickey’s Toontown in Early 2023 as part of the reimagination of Mickey’s Toontown. The ride will be housed in the El CapiTOON Theater, where Mickey and Minnie are premiering their newest short, Perfect Picnic.
March 14th, 2020 - July 25th, 2022Disneyland Park : Disneyland ResortFinding Nemo Submarine Voyage Finding Nemo Submarine Voyage closed for refurbishment on March 14th, 2020. It will reopen on July 25th, 2022.
Sept. 9 - Nov. 5Disneyland Park : Disneyland ResortBig Thunder Mountain Railroad Big Thunder Mountain Railroad will close for refurbishment from September 9th through November 5th, 2021.
Oct. 4 - TBDDisneyland Park : Disneyland ResortTarzan's Treehouse Tarzan's Treehouse will close for refurbishment beginning October 4th, 2021. Disney has revealed that the attraction is being rethemed though a reopening date has not yet been announced.

May 2022

2021 - May 28thNew Orleans Square : Disneyland ParkFantasmic! After a long closure, Fantasmic reopened in Disneyland Park on May 28th.
2019 - Early 2023Disneyland Park : Disneyland ResortMickey & Minnie's Runaway Railway (DLR) The first major Mickey-themed ride-through attraction, is coming to Disneyland’s Mickey’s Toontown in Early 2023 as part of the reimagination of Mickey’s Toontown. The ride will be housed in the El CapiTOON Theater, where Mickey and Minnie are premiering their newest short, Perfect Picnic.
March 14th, 2020 - July 25th, 2022Disneyland Park : Disneyland ResortFinding Nemo Submarine Voyage Finding Nemo Submarine Voyage closed for refurbishment on March 14th, 2020. It will reopen on July 25th, 2022.
Oct. 4 - TBDDisneyland Park : Disneyland ResortTarzan's Treehouse Tarzan's Treehouse will close for refurbishment beginning October 4th, 2021. Disney has revealed that the attraction is being rethemed though a reopening date has not yet been announced.
Mar. 9 - Early 2023Disneyland Park : Disneyland ResortMickey’s Toontown Mickey’s Toontown will close on March 9th, 2022 to make way for a completely reimagined land featuring new attractions, activities, and entertainment. The new land is set to debut in early 2023 and will be a larger space for both “spontaneous family play and parental relaxation.”
Mar. 14 - Jun. 30Disneyland Park : Disneyland ResortPirates of the Caribbean Pirates of the Caribbean will close in Disneyland Park on March 14th, 2022. Disney's website currently states that it will reopen on June 30th, 2022.
Apr. 21 - Jun. 3Disneyland Park : Disneyland ResortBlue Bayou Restaurant Blue Bayou Restaurant, which has a view of Pirates of the Caribbean in Disneyland Park, will close for refurbishment on April 21st, 2022. Disney has not yet announced a reopening date.
Apr. 22 - Sep. 01Disneyland Park : Disneyland ResortMain Street Electrical Parade The Main Street Electrical Parade is closing on September 1st, 2022.
Apr. 22 - Sep. 01Disneyland Park : Disneyland ResortDisneyland Forever Fireworks The Disneyland Forever Fireworks show will end on September 1st, 2022.
2022/05/01 - 2022/05/28Disneyland Park : Disneyland Resort2022 Disneyland After Dark: Star Wars Nite Events Event requires separate ticket. Held on select evenings.
May 16 - May 26Disneyland Park : Disneyland ResortMickey's PhilharMagic Mickey's PhilharMagic will close for a short refurbishment in Disneyland Park from May 16th to May 26th.

October 2022

2019 - Early 2023Disneyland Park : Disneyland ResortMickey & Minnie's Runaway Railway (DLR) The first major Mickey-themed ride-through attraction, is coming to Disneyland’s Mickey’s Toontown in Early 2023 as part of the reimagination of Mickey’s Toontown. The ride will be housed in the El CapiTOON Theater, where Mickey and Minnie are premiering their newest short, Perfect Picnic.
Oct. 4 - TBDDisneyland Park : Disneyland ResortTarzan's Treehouse Tarzan's Treehouse will close for refurbishment beginning October 4th, 2021. Disney has revealed that the attraction is being rethemed though a reopening date has not yet been announced.
Mar. 9 - Early 2023Disneyland Park : Disneyland ResortMickey’s Toontown Mickey’s Toontown will close on March 9th, 2022 to make way for a completely reimagined land featuring new attractions, activities, and entertainment. The new land is set to debut in early 2023 and will be a larger space for both “spontaneous family play and parental relaxation.”