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.

January

February

March

April
April 2: Sinbad Day.
April 10: Sinju Day.
April 28: Sinja Day.

May
May 8: Kouha Day.
May 9: Kougyoku Day.

June
June 3: The day when Magi started in 2009.

July
July 20: Alimor Marriage Day.

August
August 8: Alibaba Day.
August 9: Hakuryuu Day.

September

October
October 11: The day Magi ended in 2017. Also Alimor Wedding Day.

November
November 26: The Black Day, the day when people celebrate Hakuryuu and Judar and their duet character song "The Black".

December