Leap a Second . . .
by Patrick O'Brien
. . . today . . . an extra second will be added to our atomic clocks (aka “Coordinated Universal Time”) to keep them in-sync with nature. It’s something to do with the tides which generate a braking action on our planet of around 1.4 milli-seconds per day per century, according to IERS, the International Earth Rotation and Reference Systems Service, which issues leap-seconds.
I’m not making this up. Here’s the science, courtesy of the US Navy: