Leap year is likened Friday the 13th, in that it arrives every once in awhile, with a mysterious connotation, a Halloween impression, and anything can happen on that day.
It brings to mind the legendary Mephistophelean leaping enigma named "Spring-Heeled Jack", said to be a veritable devil masked & cloaked leaping demon to haunt the night and make away with fair maidens. At times he has even been associated with none other than Jack The Ripper!
It also happens to be the birthdays of The Nightstalker, and misanthropic murderess Aileen Wournos. Celebrations of leaplings have commonly been either one day after or prior to the date which only appears once every four years. But why not both? ∞