A (Mostly) Comprehensive List of Tumblr Holidays
I saw this post about Tumblr holidays/celebrations, and there were a ton of them, so I decided to make an organized list and their meanings. I am also adding famous "fandom holidays" to this list. Feel free to point out any I missed/explained incorrectly and I'll add them!
Supernatural Tuesday --- an episode of Supernatural was about a time loop where it was always Tuesday. Can be posted on any Tuesday.
Leave the Bog --- a meme with a drawing saying "When it's safe to leave the bog" and an arrow pointing to Tuesday. Can be posted on any Tuesday.
Out of Touch Thursday --- a video of the cast from the anime Lucky Star dancing to the song "Out of Touch" by Hall and Oates. Can be posted on any Thursday.
Thursday the 20th --- a screencap of a rapper in The Simpsons with a gold necklace that says "Thursday the 20th". Can only be posted on Thursdays which are also the 20th of their month.
Galentine's Day --- February 13th. From an episode of Parks and Rec where one of the characters dedicates this day to celebrating female friendship.
Pi Day --- March 14th. The first digits of pi, 3.14, line up with "March 14" or 3/14.
The Ides of March --- March 15th, the day that Julius Caesar was assassinated. Many memes and jokes are made about him, the assassination in general, or bad luck.
Evergiven/Suez Canal Anniversary --- March 23rd. Refers to an event where a ship, the Evergiven, got stuck in the Suez Canal.
94 Meetings Day --- March 31st. From an episode of Parks and Rec where April doesn't think this day exists and books all her boss's appointments then.
April Fools --- April 1st. Also a real world holiday. The most popular prank is Rickrolling.
Mishapocalypse --- April 1st. On this day, Tumblr users spam one specific photo of Misha Collins, who played Castiel on Supernatural, where he is looking at the camera wide-eyed.
Neil Banging Out the Tunes --- April 13th. Refers to a photo of a rat by a children's keyboard with the caption "Neil banging out the tunes April 13th 2006".
Homestuck Day --- April 13th. The birthday of Homestuck, a web comic. It is/was one of the most popular fandoms on Tumblr.
It's Gonna Be May --- April 30th. Comes from a GIF of Justin Timberlake singing the song "It's Gonna Be Me". In the song, he pronounces "me" like "May".
Star Wars Day --- May 4th. It comes from a pun between "May the force" and "May the Fourth".
Revenge of the Fifth --- May 5th. It comes from a pun between "Revenge of the Sith" and "Revenge of the Fifth".
Let Papyrus Say "Fuck" Day --- June 16th. Someone who was annoyed with mischaracterization of Papyrus from Undertale established this holiday and it caught on.
Dashcon Anniversary --- July 11th. Dashcon was a poorly organized attempt to hold a Tumblr convention.
21st Night of September --- September 21st. The day referenced in the catchy disco song "September" by Earth, Wind, and Fire.
Frodo and Bilbo's Birthday --- September 22nd. The joint birthday of Frodo and Bilbo Baggins from The Lord of the Rings.
Mean Girls Day --- October 3rd. This comes from the part of the movie where Cady's crush asks her what day it is.
Treat Yo'Self --- October 13th. From an episode of Parks and Rec where Tom and Donna have a day to pamper themselves.
November 5th --- Multiple holidays. It's Guy Fawkes Day (a holiday in Great Britain where effigies are lit to celebrate the failure of a traitor), and some people post screencaps of the movie V for Vendetta, where it's mentioned. November 5th, 2020 specifically had three huge news items: rumors of Vladimir Putin's resignation, Destiel (a ship from Supernatural) becoming (one-sided) canon, and the controversy over counting electoral votes in the U.S. election.
Life Day --- November 17. The equivalent of Christmas in Star Wars.
Christmas Adam --- December 23rd. It comes from a Tumblr post making a pun on "eve" and "Eve" (from the Bible). As the original Tumblr post describes, it "comes before Christmas Eve and is generally unsatisfying".
Almost Christmas (Means It Wasn't Christmas) --- 11:59 P.M. on December 24th. This is from Ace Attorney, a video game where you're a defense lawyer. The fact that it's not quite Christmas is a crucial piece of evidence in one of the cases.
DL-6 --- Christmas/late December. This is when one of the most famous cases from Ace Attorney (mentioned above) occurs.
Annoy Squidward Day --- either January or February 15th. This refers to an episode of Spongebob where Mr. Krabs votes for Employee of the Month; a screen cap shows Spongebob pointing to the 15th day on the calendar with a sticker of Squidward on it.
Fuck this Post and Happy Birthday [Fictional Character] --- any character's birthday. The original Tumblr post starts out with a user saying "People who celebrate fictional character birthdays are annoying, pass it on", and another retorts with "FUCK this post and happy birthday, Sonic". "Sonic" can be replaced with a character of your choice.
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