Today only happens once every four years (with exceptions.)
Well, every February has a day 15, but only in leap years is the 15th the middle of the month, and thus the Ides of February. The funny thing is, though the Ides of the month is the middle day, the 15th of most months is not the true middle. But this year, in February, it is. There are fourteen days before today and fourteen days after. Cool.