Leap Seconds

You are probably not aware of this, but since January 1, 1900, there have been 37 seconds added to "official" time. The most recent was added on December 31, 2016. The reason they are needed is because the earth's rotation is slowing at the rate of about 300 meters per year.

In other words, if you marked the exact location of the sun relative to the equator, then marked it again 365 days later, the mark would be off by about 300 meters to the East.

If you apply the same logic to that of microwave ovens, 37 seconds is a long time. Perhaps this is the cause of global warming? :)

The real question is, what are you doing with all this extra time?

You can read more here: https://en.wikipedia.org/wiki/Leap_second