From some nerdy web site (http://www.news.wisc.edu/14723 if you must know):
In 1582, Pope Gregory instituted a calendar reform (which is why we use the “Gregorian Calendar”): We add a leap day every four years, except in years divisible by 100 (like 1900), but those can also be leap years if they are divisible by 400.
“So we would have skipped a leap day in 2000,” says Lattis, “but it’s also divisible by 400, and that’s the exception to the exception.”
So, how many leap days have YOU had? You could have a fun event in your consignment, resale, or thrift shop, for one day only: Take 2.9% off for every Leap Day you’ve lived. (That’s to honor Feb 29, of course!)
I’ve had 16!! So, because I am one of those OLD customers so many of you shudder to think about, I’d get 46.4% off. That snippy little self-important 23-year-old only gets 17.4% (Revenge of the Sagging Cells, I like to think of it as!)
Making the purely-arbitrary decision that none of your customers are over 80 (or, if they are, that they have grown beyond worrying about discounts on your already-terrific prices), here’s the list of years your customers might have lived through a Leap Day on:
Like this idea? Make up a chart of birth year = discount. Don’t insist on seeing valid ID to PROVE that your customer, who’s having a great deal of fun (after all, it ain’t often that the older you are, the better off you are, right?) is as old as she admits to. And Great-Grannie, who claims to be 86-and-a-half and wants to claim that discount? What the heck, break the bank, give her 100% off something. It’ll be worth it, to see the smile on that wrinkly old face, huh? Just be sure to capture a photo on your digital camera of her, and post it on your Community Bulletin Board for all to enjoy!
Auntie Kate The Resale Expert 