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.

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 ...

Someone born on Leap Day may celebrate birthdays Feb ... if we didn't observe Leap Year? What if we got rid of Leap Day? If we didn't use Leap Years, our calendars would be off by 25 days after ...

Maybe you’ve come across one or two people over the years who share your birthday. If you were born ... and found that September is the busiest month to bring home a bundle of joy.

The calendar accounts for Earth’s imperfect ... Image Christine Cullen, who has a leap year birthday, holding her newborn, also a leap day baby, at Brigham and Women’s Hospital in Boston ...