Today is February 29th, which only happens once ever four years, except for every century, unless the century is divisible by 400. Phew. That’s all the permutations to make our orbit around the sun (the year) match the earth’s rate of spin (the day), despite the fact that these two phenomena have nothing to do with each other. So it actually doesn’t work, and our year is always a little bit off.
The video above explains this in more detail. It’s quite interesting, and also enlightening. It shows how everything we take for solid and granted is actually constantly changing if you look at it close enough. Including time.
Happy Leap Year, and if it’s your birthday, Happy Birthday, Happy Birthday, Happy Birthday, Happy Birthday.