Name: Calendar Man
Universe: Earth-1
Alter Ego: Julian Day
Occupation: Ex-Stage Magician, now Professional Criminal
Marital Status: Divorced
Group Affiliation: None
Base of Operations: Gotham City
Known Relatives: None
Height: 6 ft. 11 in.
Weight: 193 lbs.
Hair Color: Brown
Eye Color: Blue
First Appearance: Detective Comics #259

History:
In the guise of Maharajah the Magician, Julian Day arrived in Gotham City for a five-day engagement, which was actually a front for the series of crimes he intended to commit as the Calendar Man.

Basing his crimes on the five different seasons – winter, spring, summer, autumn, and the Indian monsoon (or rainy seasoon) – the Calendar Man wore a different uniquely equipped uniform for each crime, publicly challenging the Batman to catch him before he could finish his crime spree. Unfortunately for Day, the Caped Crusader was more than equal to the task.

Several years later, after escaping from prison, the Calendar Man returned to Gotham, this time basing his crimes upon the days of the week. Once again, the Batman caught him, and Day is currently serving time in Gotham State Prison.

Powers:
Possessing no true super-powers, the Calendar Man is apparently an accomplished inventor, developing special equipment as necessary to carry out his thematic crimes.

The Calendar Man is not a particularly skilled hand-to-hand combatant, preferring to rely on his advanced weaponry when facing an opponent.