TODAY · Birthday
Jon Favreau’s birthday
Born in 1966. Filmmaker behind Iron Man and creator of The Mandalorian.
Star Wars / Marvel
Date source ↗THE COLLECTIVE ALMANAC
Dates worth geeking out over.
Real milestones. Fictional history. A few good reasons to geek out together.
11 matching dates · Calendar follows Eastern time · Convention dates are local to the venue
Fan day
Back to the Future Day
October 21, 2015 is Marty and Doc’s fictional destination in Part II. Fans mark October 21 as Back to the Future Day. Flying cars optional.
Sci-fi / Movies
Date source ↗Birthday
Carrie Fisher’s birthday
Born October 21, 1956. Remembering our princess, our general, and our storyteller. Her 70th birthday remembrance falls in 2026.
Star Wars
Date source ↗Anniversary · 85 YEARS
Wonder Woman Day
DC dates Wonder Woman’s debut in All-Star Comics #8 to October 21, 1941. Celebrating 85 years in 2026; this is her comics debut, not a fictional birthday.
DC / Comics
Date source ↗Birthday
Emilia Clarke’s birthday
Born October 23, 1986. Celebrating the actor behind Daenerys Targaryen—40 in 2026. Dracarys!
GOT / HBO
Date source ↗Fictional date
Frodo wakes in Rivendell
October 24, T.A. 3018 in the story’s calendar. A Middle-earth story date, not a Gregorian historical anniversary.
LOTR
Date source ↗Fictional date
The Council of Elrond
October 25, T.A. 3018: the council meets in Rivendell. A date in Tolkien’s fictional calendar, not an exact Gregorian conversion or a real-world anniversary.
LOTR
Date source ↗Anniversary · 72 YEARS
Godzilla Day
The original Godzilla opened in Japan on this day.
Fandom
Date source ↗Fan day
Stranger Things Day
November 6 marks Will Byers’s disappearance in the fictional 1983 timeline. Netflix’s annual fan celebration.
Netflix / Horror
Date source ↗Birthday
Carl Sagan’s birthday
Remembering the astronomer, science communicator, and author of Contact. Born in 1934.
NASA / Space / Books
Date source ↗Anniversary · 9 YEARS
Battlefront II (2017)
The game’s worldwide release. A good excuse to revisit Rogue Rankings.
Fandom
Date source ↗Research expanded October 21, 2026. Annual dates roll forward automatically; conventions are specific confirmed editions and stay visible through their final day. Check organizers for schedule changes. Sources identify original release regions; fictional dates and fan observances are labeled separately. This is a curated calendar, not an exhaustive list or a live release feed.