August 24 is Pompeii Day, and to celebrate, we put the eyes of the sooth sayers on the back of our hands.
May 7th is Black spot day
Doctor Who Day is on November 23rd, the day the first episode of Doctor Who went on air
May 31 is River Song day
April 3 is Wear A Bow Tie Day.
April 3 is also Fish Fingers and Custard Day
December 21: International Dalek Remembrance Day
March 25th is the official 2nd Doctor Day
Clara Appreciation Day is March 5th! Celebrate by cosplaying as her and writing "The Impossible Girl" on your arms
Ninth Doctor Appreciation Day is on May 28. Celebrate with bananas, of course!
Comment if you have any others!