Birthday trivia

Last Sunday was my birthday and I received loads of wishes from friends. I also received this interesting trivia in one of the wishes

Your actual Birthday occurs only once every 7 years!
Although you might celebrate your birthday every year, your actual birthday only occurs once every 7 years! Not counting leaping years, the date you were born on moves each year to the following day of the week. For example, if you were born on Saturday March 15th, the following year, March 15th will fall on a Sunday, the year after on a Monday, and so on. This means your annual celebration is actually for your birth date - not your birthday - and in truth your birth day (the actual day you were born on) occurs only every 7 years!

Who'd want to celeberate their birthday every 7 years, I'm not!

later...