We take the calendar for granted. We all manage our lives hour by hour, day by day, week by week, but we seldom consider the truly strange thing that the measurement of time actually is. For example: do you know how Election Day is reckoned? How about knowing when Easter will occur, and why it will happen when it happens?
You know, the day isn’t even as long as you think it is; it’s shorter by four minutes. This adds up to a quarter day every year, or a whole day every four. More or less. Kind of. Maybe.
To reconcile this incongruity, every fourth year (except in certain centuries) is a Leap Year. Why a “leap” year? Well, because in common years, the advancement of the calendar puts fixed-date holidays on subsequent weekdays each year, i.e., Christmas is on Tuesday, then Wednesday the next year, then Thursday, etc. In leap years, Christmas would “leap” over Thursday to Friday.
Are you with me so far? No? That’s okay. I had to read it three times myself before I realized that I’d rather be watching superheroes. Again.
In the modern calendar, the extra day is put on February 29. If you’re born on this day, do you have one birthday every four years? Technically yes, but the law looks at it somewhat differently so, depending upon where you live, your birthday anniversary will be set under law to February 28 or March 1 in common years. Regrettably, your immortality is not secured, you will not be 21 in your 84th year; you will still feel the ravages of time. Sorry to be a buzzkill.
So, with time travel and immortality out of the question, where are we really? There won’t be another February 29 for four more years. A lot can change in that time:
Vinyl will fade to obscurity again, but 8-track tapes will be on the rise.