Punk for a Day Day
Punk for a Day Day is held on October 25. This event in the third decade of the month october is annual.
Mole Day on October 23 (is an holiday celebrated among chemists);
iPod Day on October 23 (The first iPod was sold on November 10th, 2001, and the world has never been the same);
Cement Day on October 29 (celebrated since 2018)