(June 30) Today we’re celebrating . . .  Leap Second Adjustment Time

Leap Second Adjustment Time
A leap second can be added, or subtracted, twice a year to keep time in sync with the atomic clock time.

The second is added, or subtracted, at midnight on June 30th and January 31st.

Although a…leap second is “added” at midnight, its effect actually slows down the atomic clock by one second…since a…leap second represents an extra second that must be counted before the new day can begin.

photo credit: via flickr



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