Try this: Take 66, subtract your current age, add 50 and you should get the year of your birth. It worked for me. You?

Nope. Off by a year. I have already had my birthday this year.

Nope, I too already had a birthday. The math is an interesting coincidence, though. 

Not coincidentally, this isn't the only thing about the Bible that doesn't work for me. 

It worked for me, but it only works if your birthday has not already occurred this year (which is why the question is best asked in January!). It isn't unique to these numbers, either, it's a formula. It also works with 67 and 49 or 68 and 48, etc.

It worked for me.

Yep, it worked for me.