Calendar Man

Calendar Man (real name: Julian Gregory Day) is a fictional comic book supervillain, and an enemy of Batman, who appeared in books published by DC Comics. He first appeared in Detective Comics #259 (September 1958). He was created by Bill Finger. Calendar Man is fascinated by dates and calendars – even his real name is a play on the Julian and Gregorian calendars. His crimes always have a relationship to the date that they are committed. The theme may be related to what day of the week it is or to a holiday or to a special anniversary on that date; he will plan his crime around that day. He often wears different costumes which correspond to the significance of the date, though he does have a main costume which has various numbers (meant...