Magi: The Labyrinth of Magic
The Magi fandom has the habit of celebrating certain days annually, typically dedicated to certain characters or ships, especially in the absence of canonical character birthdays. I want to emphasize: these are not character birthdays! These are days used to celebrate characters, typically based on Japanese puns of the character names!
Feel free to message me if you know more.
April 2: Sinbad Day.
April 10: Sinju Day.
April 28: Sinja Day.
May 8: Kouha Day.
May 9: Kougyoku Day.
June 3: The day when Magi started in 2009.
July 20: Alimor Marriage Day.
August 8: Alibaba Day.
August 9: Hakuryuu Day.
October 11: The day Magi ended in 2017. Also Alimor Wedding Day.
November 26: The Black Day, the day when people celebrate Hakuryuu and Judar and their duet character song "The Black".