(NBCNC) - If time is truly precious, take note that this Saturday will last longer than any other for years to come.
Tonight you will get to live an extra second.
You can thank international timekeepers who are adding a second to the clock at Midnight Universal Time. That's 8:00 PM EST.
They're doing it to synchronize the official atomic clock with the earth.
The earth slows down a fraction of a fraction of a second every year due to the tidal pull of the moon.
Timekeepers likely won't add another leap second for 2 or 3 years.