The rarest birthday of the 365 annual calendar days is Christmas Day, Dec. 25. If your birthday is New Year’s Day or Christmas Eve, you also have uncommon birthdays. Jan. 1 and Dec. 24 are ...

I remember when I saw my first perpetual birthday Calendar at a colleagues house years ago. It hung in their kitchen, was filled with names and every month looked lovingly worn with time.

For the first 19 years of his life, young George celebrated his birthday on that date. Then things got complicated. The Julian calendar had a 12-month year measuring 365.25 days -- an attempt to ...