This Tuesday, June 30, 2015 file photo shows a wall clock in New York. Plugged-in clocks may be losing or gaining as much as seven and a half minutes between May and November 2018 because of U.S. government energy deregulation to save utilities millions of dollars, scientists say. (AP Photo/Patrick Sison)
WASHINGTON — Running late for work or just miss that bus? You could have a good excuse: Your electric clock might be running a bit cuckoo.