Wishing a fantastic day today for your birthday buddy, I hope Ronnie gives you the day off and treats you like a king for the day (wishes are free).
Anyway have a real good one today
Are we really really sure we have the correct date.... Marval Comics would say no....
It was an old piece of information given in Julie Schwartz's "Answer Man" letter columns that Superman's birthday was on February 29th - meaning that Superman only had a birthday once every four years! Apparently, this is Superman's equivalent birthday according to the earth calendar; Krypton's calendar was slightly different, with eighteen Kryptonian years for every twenty-five years on Earth. Presumably, Superman also has a Kryptonian date for his birth that he celebrates, just as Jewish children have a birthday in the Hebrew calendar (where one's bar mitzvah is celebrated) and a birthday in the Western calendar.
This date of February 29th was not always his birthday, however. During the Golden Age, Superman's birth on Kryptonopolis was in October, according to ACTION COMICS #149 (1950).