In my post Double Date, I mentioned that the person I had a date with was exactly one year older than I. It was after this point I came up with the idea to having your wedding anniversary equidistant between each others birthday. I do not know why I decided this— but I felt that it would be fair to have ones anniversary the same distance between each others birthday.
What you do is you count forward and backward between your birthday and the other person's until you land on a date. Because there is an odd number of days in a year there should only be one day that you land on— the other two will be side by side.
Whenever I found out someones birthday that I liked, I usually calculated this date just for fun. Interestingly I found that one person's birthday calculated out so that the two days that were side by side were February 28th and March 1st. The cool thing about this is that if we ever got married, we would get married on February 29th on a leap year. I know what you're asking: "When do you celebrate it on the other three years?"… December 22nd.
If I did my calculations correctly, today should be that person's birthday… so happy birthday Jill. In reality… when I actually did pick the day I got married, it wasn't to that person, and it was more based upon what Saturday my wife and I could book the church— not some bizarre day that was calculated on a whim.