Annual observance

Supernatural Day

September 13 Cultural / community observance Updated 2026-07-10

Find Supernatural Day 👻 in the Obscure Holiday Calendar app with daily prompts, playful art, and reminder tools.

Overview

Supernatural Day, observed annually on September 13th, is an unofficial fan holiday dedicated to celebrating the long-running American dark fantasy television series *Supernatural*. This date marks the premiere of the show's pilot episode in 2005, and fans worldwide use the day to honor the series' legacy, its beloved characters Sam and Dean Winchester, iconic storylines, and enduring themes of family, sacrifice, and the battle against supernatural evil.

Why it matters: Supernatural Day, celebrated on September 13, honors the legacy of the iconic television series *Supernatural*, which premiered on this date in 2005. This day allows fans to reflect on the show's themes of family, sacrifice, and the fight against evil, while celebrating the enduring impact it has had on popular culture and its dedicated community.

Origin and story

The holiday is celebrated on September 13th because that was the original air date of the *Supernatural* pilot episode in 2005.

*Supernatural* ran for an impressive 15 seasons, totaling 327 episodes, making it one of the longest-running fantasy/sci-fi series in U.S. television history.

Quick facts

  • DateSeptember 13
  • TypeCultural / community observance
  • Great forFriends, Families, Classrooms, Teams

Also on this date

Ways to celebrate

What premiered as a modest monster-of-the-week show on September 13, 2005 quietly became a genre-television record holder. "Supernatural" ran for 15 seasons and 327 episodes before ending in 2020, making it the longest-running American live-action fantasy series ever, surpassing longtime record holders like "Smallville" and "Charmed."

Start (or revisit) the road trip

  • Watch the pilot episode and notice how much of the show's core setup — the Impala, the brothers, the "hunting" premise — was locked in from the very first episode.

Read the trivia behind the record

Helpful resources: TV Insider rounds up behind-the-scenes facts and the show's record-setting run in "'Supernatural' Turns 15: 15 Fun Facts About the Hit CW Series."

Pick a favorite season and rewatch it

  • With 327 episodes total, rewatching the whole series is a real commitment — pick a single favorite season or story arc instead of trying to marathon all fifteen.

Did you know?

The show started on The WB but moved to The CW mid-run after the two networks merged in 2006 — meaning "Supernatural" is one of the few series to effectively outlive the network that originally created it.

Fun facts

  • The holiday is celebrated on September 13th because that was the original air date of the *Supernatural* pilot episode in 2005.
  • *Supernatural* ran for an impressive 15 seasons, totaling 327 episodes, making it one of the longest-running fantasy/sci-fi series in U.S. television history.
  • The iconic 1967 Chevrolet Impala, affectionately known as 'Baby,' was nearly a 1965 Mustang or a 1969 Camaro before series creator Eric Kripke insisted on the Impala.

Sources and attribution

External links may lead to third-party websites.


Continue your streak

Open one more holiday before you go to build daily momentum.

FAQ

When is Supernatural Day?
It is observed on September 13 each year.
What is Supernatural Day?
Supernatural Day, observed annually on September 13th, is an unofficial fan holiday dedicated to celebrating the long-running American dark fantasy television series *Supernatural*. This date marks the premiere of the show's pilot episode in 2005, and fans worldwide use the day to honor the series' legacy, its beloved characters Sam and Dean Winchester, iconic storylines, and enduring themes of family, sacrifice, and the battle against supernatural evil.
How do people celebrate Supernatural Day?
Watch the 2005 pilot episode or rewatch a favorite season, and read up on how 'Supernatural' became the longest-running live-action fantasy series in American TV history over its 15-season run.

Get the app

Thousands of obscure holidays, daily widgets, reminders, and fun facts—free on iOS and Android.

Recently viewed holidays