A recent viral Instagram post about Marvel fans looking for a complete MCU refresh before the release of Avengers: Doomsday is circulating on the internet. According to the reports, anyone planning to watch every movie, series, and special before the film would need around 330 watch hours which equals 19,800 minutes.This calculation proves how massive the Marvel Cinematic Universe has become ahead of the film's December 18 launch. The long runtime has also sparked new interest in shorter catch-up lists and selective rewatch guides that help viewers prepare without going through the entire franchise.Continue reading more about the story.The 330-hour MCU marathon before Avengers: Doomsday View this post on Instagram Instagram PostIf viewers want to watch Avengers: Doomsday and connect every detail, they will have to begin with Iron Man (2008). During that era, Netflix had not completed 18 months of its streaming service and Instagram was still two years away when Tony Stark built a suit inside a cave. It was clearly a different era.But now the MCU has grown into one of the largest entertainment production company with 38 movies and more than 20 TV shows. A viewer needs more than 330 continuous watch hours to grasp and connect every detail, hidden reference, character arc and storyline with the upcoming Avengers movie.Watch these MCU movies and shows sequentially before watching Avengers: DoomsdayHere is the list of the MCU movies and TV shows arranged in order:Eyes of WakandaCaptain America: The First AvengerMarvel Studios One Shot: Agent CarterThe Fantastic Four: First StepsCaptain MarvelIron ManThe Incredible HulkIron Man 2Marvel Studios One Shot: A Funny Thing Happened on the Way to Thor’s HammerThorMarvel Studios One Shot: The ConsultantThe AvengersMarvel Studios One Shot: Item 47Thor: The Dark WorldIron Man 3Marvel Studios One Shot: All Hail the KingCaptain America: The Winter SoldierGuardians of the Galaxy Vol. 1I Am Groot season 1 Episode 1Guardians of the Galaxy Vol. 2I Am Groot season 1 rest of the episodesI Am Groot season 2Daredevil season 1Jessica Jones season 1Avengers: Age of UltronAnt-ManDaredevil season 2Luke Cage season 1Iron Fist season 1The DefendersCaptain America: Civil WarBlack WidowBlack PantherSpider-Man: HomecomingThe Punisher season 1Doctor StrangeJessica Jones season 2Luke Cage season 2Iron Fist season 2Daredevil S3Thor: RagnarokThe Punisher season 2Jessica Jones S3Ant-Man and the WaspAvengers: Infinity WarAvengers: EndgameLoki season 1What If…? season 1Marvel ZombiesWandaVisionShang-Chi and the Legend of the Ten RingsThe Falcon and the Winter SoldierSpider-Man: Far From HomeEternalsSpider-Man: No Way HomeDoctor Strange in the Multiverse of MadnessHawkeyeMoon KnightBlack Panther: Wakanda ForeverEchoShe-Hulk: Attorney at LawMs. MarvelThor: Love and ThunderIronheartWerewolf By NightThe Guardians of the Galaxy Holiday SpecialAnt-Man and the Wasp: QuantumaniaGuardians of the Galaxy Vol. 3Secret InvasionThe MarvelsLoki season 2What If…? season 2Deadpool & WolverineAgatha All AlongWhat If…? S3Daredevil: Born Again season 1Captain America: Brave New WorldWonder ManDaredevil: Born Again season 2The Punisher: One Last KillSpider-Man: Brand New DayHow does the calculation work? Know before watching Avengers: DoomsdayA scene from Avengers: Doomsday Special Look (Image via YouTube/@Marvel Entertainment)It means that if someone streams without stopping, they will need 14 days in case of a non-stop marathon or nearly 58 days if they watch for six hours a day. Therefore, if interested fans start watching all MCU movies and TV shows from today by spending six hours, they can finish the entire saga before Avengers: Doomsday's release.This calculation does not include the ABC series Agents of S.H.I.E.L.D which ran from 2013 to 2020 with 7 seasons. Some episodes link to MCU movies up to Endgame, but most of the show mainly follows its own characters. The show's place in the MCU timeline is uncertain and therefore viewers can skip it if their goal is to understand the next Avengers film.Follow Soap Central for more updates on Avengers: Doomsday.