February 29 — a paradox!
Leap year! Once every four years we add an extra day to February. And thus was born a plot point in Gilbert & Sullivan’s The Pirates of Penzance. For some ridiculous reason, to which however, I've no desire to be disloyal, some person in authority-- I don't know who--very likely the Astronomer Royal, has decided, that, although for such a beastly month as February, twenty-eight days as a rule are plenty: One year in every four his days shall be reckoned as nine and twenty. Through some singular coincidence--I shouldn't be surprised if it were owing to the agency of an ill-natured fairy, you are the victim of this clumsy arrangement, having been born in leap year on the twenty-ninth of February. And so, by a simple arithmetical process, you'll easily discover, that tho' you've lived twenty-one years, yet, if we go by birthdays, you're only five and a little bit..Over.