History Main / BirthdayBuddies

* Downplayed in ''Literature/HarryPotter''. Neville Longbottom and Harry Potter were actually born a day apart - 30th and 31st of July 1980, respectively - but this turns out to be an incredibly SignificantBirthDate since the prophecy that pushed Voldemort to kill Harry's parents (and thus kick-start the whole plot) specifies that "the one with the power to vanquish the Dark Lord will be born as the seventh month dies." Voldemort took this to mean Harry but it could have also very easily been Neville, as Dumbledore notes while explaining to Harry the nature of fulfilling prophecies.

* Subverted in ''WesternAnimation/TheFairlyOddParents'' episode "Boys in the Band", where Timmy is having a miserable ForgottenBirthday alone at home with Vicky while his parents are going to the Chip Skylark concert. Chip Skylark then winds up at Timmy's house, held hostage by Vicky, and it turns out to be ''his'' birthday, too. Timmy, having initially blamed Chip for ruining his birthday, starts to bond with him over the fact that they're both having a miserable birthday... [[NotSoForgottenBirthday except that Timmy's birthday was actually the day after,]] and it was ''he'' who forgot.

* In''Manga/HitoribocchiNoOOSeikatsu:'', Bocchi Hitori and Kai Yawara discovered they shared the same birthday at age 5. Kai was upset that Bocchi kept calling her [[UsefulNotes/JapaneseHonorifics "Yawara-San"]] and refused to let her leave until she called Kai by her first name. When Bocchi explained the next day that she didn't use Kai's name because she wanted Kai to stay with her, Kai promised to stay with her and that they would always celebrate their birthdays together. Kai was Bocchi's OnlyFriend from this point until the start of the series.

[[Web Videos]]
* ''WebVideo/TheLizzieBennetDiaries'': Liziie Bennet is very close with her best friend Charlotte Lu, who was born on the very same day as she was. Lizzie jokes that they have been friends since fetuses because their mothers were friends who frequented the very same book club and went to labour at the same time. There's a rumour that Lizzie as a child behaved like a brat during Charlotte's sixth birthday party and wanted to open all of Charlotte's presents. During Q&A from fans, one person said they sensed lot of drama in that story, since it must have been Lizzie's birthday as well. Charlotte snarks that it's precisely it: Lizzie had her own presents to open.

TruthInTelevision, obviously. Everyone shares their birthday with ''someone''. An interesting thing to note is that, due to the [[https://en.wikipedia.org/wiki/Birthday_problem birthday paradox]], any cast of over 23 characters is statistically unrealistic if not one of them shares a birthday with another. In fiction, the fact that this trope is usually averted makes it similar to The OneSteveLimit- while common in real-life, it's weird for fictional characters to have the same name, just as it's uncommon for them to have the same birthday.

* In''Manga/HitoribocchiNoOOSeikatsu:'', Bocchi Hitori and Kai Yawara discovered they shared the same birthday at age 5. Kai was upset that Bocchi kept calling her [[JapaneseHonorifics Yawara-San]] and refused to let her leave until she called Kai by her first name. When Bocchi explained the next day that she didn't use Kai's name because she wanted Kai to stay with her, Kai promised to stay with her and that they would always celebrate their birthdays together. Kai was Bocchi's OnlyFriend from this point until the start of the series.

* In''Manga/HitoribocchiNoOOSeikatsu:'', Bocchi Hitori and Kai Yawara discovered they shared the same birthday at age 5. Kai was upset that Bocchi kept calling her [[JapaneseHonorifics "Yawara-San"]] and refused to let her leave until she called Kai by her first name. When Bocchi explained the next day that she didn't use Kai's name because she wanted Kai to stay with her, Kai promised to stay with her and that they would always celebrate their birthdays together. Kai was Bocchi's OnlyFriend from this point until the start of the series.

* ''LightNovel/FullMetalPanic'': not mentioned until well into the series, it's part foreshadowing part background plot point: all of the ''Whispered'' around the world were born on exactly the same day, with adjustments for local time frames.

* In ''TheWestWing'' episode "Noël," it only further messes with Josh's already traumatized mind to find out that he and the suicidal Air Force pilot, Robert Cano, share the same birthday.

* In the ''Series/SpaceCases'' episode "It's My Birthday, Too, Yeah", Radu lies and claims that he shares a birthday with Bova, because his species don't actually have birthdays and he's never had a birthday party.

Birthdays. A celebration of the individual and their continued existence on this Earth, a personal and special day for the birthday-person, a day all about ''them.'' Except that, with only 365-66 days in a year and billions of people on the planet, no birthday is unique to the individual. Everyone shares a birthday with ''someone''... and occasionally, a character may just run into someone else who has the same birthday as them.

Birthdays. A celebration of the individual and their continued existence on this Earth, a personal and special day for the birthday-person, a day all about ''them.'' Except that, with only about 365 days in a year and billions of people on the planet, no birthday is completely unique to the individual. Everyone shares a birthday with ''someone''... and occasionally, a character may just run into someone else who has the same birthday as them.

TruthInTelevision, obviously. Everyone shares their birthday with ''someone.'' An interesting thing to note is that, due to the [[https://en.wikipedia.org/wiki/Birthday_problem birthday paradox]], any cast of over 23 characters is statistically unrealistic if not one of them shares a birthday with another. In fiction, the fact that this trope is usually averted makes it similar to The OneSteveLimit- while common in real-life, it's weird for fictional characters to have the same name, just as it's uncommon for them to have the same birthday.

* Played with in the ''Series/GrowingPains'' episode "Birth of a Seaver." Maggie goes into labor with Chrissy on Ben's birthday, leaving Ben [[InfantSiblingJealousy upset about being ignored]] until he has a heart-to-heart talk with [[BirthDeathJuxtaposition a dying elderly man in the hospital.]] But the labor takes so long that by the time Chrissy is finally born, it's past midnight, and Ben is relieved that he won't have to share his birthday with his new sister after all.

* ''VideoGame/FireEmblemThreeHouses'': Whatever birthday you put in for [[PlayerCharacter Byleth]], the mysterious girl in his visions shares as well. She comments on this and feels connected to them because of it. [[spoiler:Actually, that birthday only belongs to Sothis. Byleth just osmosed it due to SharingABody. Though even once their real birthday is revealed, Byleth's friends still celebrate his birthday on the day you entered.]]

* ''LightNovel/FullMetalPanic'': not mentioned until well into the series, it's part{=Foreshadowing=} part background plot point: all of the ''Whispered'' around the world were born on exactly the same day, with adjustments for local time frames.

[[folder:Anime and Manga]]

[[folder:Fanworks]]

[[folder:Films-- Live-Action]]

* It's possible for your birthday in ''VideoGame/AnimalCrossing'' to fall on the same day as a regular villagers birthday. It gets acknowledged as something unique and exciting.
--> '''Peppy''': I can't believe it's your birthday AND it's my birthday too! This is, like, the best day of the year! Two birthdays, two cakes, and double the presents!

* The ''WesternAnimation/{{Arthur}}'' episode "Arthur's Birthday," adapted from a book of the same name, deals with Arthur and his classmate Muffy having their birthday parties on the same day. Arthur and his friends aren't sure whose party to attend until they come up with a solution: [[spoiler:they turn it into a surprise party for Muffy at Arthur's house]].
* In ''WesternAnimation/AvatarTheLastAirbender'', it is revelaed that the previous Avatar, and the Fire Lord that started the war (Roku and Sozin) were actually born the same day, and show that they were very close friends, even celebrating their birthday together. This all contrast with their later relationship as bitter enemies in their old age.

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* Downplayed in ''Literature/HarryPotter''. Neville Longbottom and Harry Potter were actually born a day apart - 30th and 31st of July 1980, respectively - but this turns out to be an incredibly SignificantBirthDate since the prophecy that pushed Voldemort to kill Harry's parents (and thus kick-start the whole plot) specifies that "the one with the power to vanquish the Dark Lord will be born as the seventh month dies." Voldemort took this to mean Harry but it could have also very easily been Neville, which is also noted by the characters in the story.

* In ''WesternAnimation/AvatarTheLastAirbender'', it is revelaed that the previous Avatar, and the Fire Lord that started the war (Roku and Sozin) where actually born the same day, and show that they were very close friends, even celebrating their birthday together. This all contrast with their later relationship as bitter enemies in their old age.

[[AC:Literature]]