Hugh Jackman as Wolverine appears in this photo tweeted out by the actor on May 13, 2019.

SALT LAKE CITY — In case you didn’t know, today is X-Men Day, which 20th Century Fox has declared as a day for celebrating your favorite mutant heroes.

According to CBR, today has been set aside as “a celebration of the culmination of the X-Men saga.” While Marvel's X-Men characters are some of the oldest in the company’s history, it seems Fox’s specification of the franchise’s appeal “for nearly 20 years” indicates the focus is on the film series here.

The X-Men were introduced to comic readers in September 1963. Creators Stan Lee and Jack Kirby developed the team as a vehicle for delivering messages of tolerance and acceptance of others during the civil rights movement in the 1960s, according to History.

Comment on this story

Fans, film buffs and actors associated with the franchise — including Hugh Jackman and Ryan Reynolds — are sharing their experiences, favorite characters, art and gratitude towards the X-Men series.

I previously wrote that Disney announced a new release date — April 3, 2020 — for “The New Mutants,” a horror film set in the X-Men universe. The next X-Men film is “Dark Phoenix,” which stars Sophie Turner, James McAvoy, Michael Fassbender and Jennifer Lawrence. It comes to theaters on June 7.