As time goes by

When the ball drops on New Year’s Eve, time will be on our col­lec­tive mind. Astronomers can mea­sure these tem­po­ral mile­stones with incred­i­ble accu­racy, of course. All you time afi­ciona­dos will prob­a­bly note that the ball will drop a few sec­onds too late or too early. It always does.