Just found out that my Gregorian birthday was 5 Feb 1982. I don't really care about birthdays tho, I see it overrated.
I remember once put different BDays on some forums and on FB. Someone wished me a BD in the forums first then after a week the same person did it again on FB before realizing the double BD. Shortly after, this person came to me wonder what happened. Was worth it tho - getting wishes by a nice lady