Counting the seconds -- and leap seconds

      Keeping time is a simple matter of counting -- counting seconds, summing them into minutes, hours, days. Or is it? Recent news has included mention of the changing length of our solar day and the need for insertion of leap seconds.   (A leap second is a one-second adustment to the time kept by precise atomic clocks -- to keep this latter time close to mean solar time. No leap-seconds were added in 2011 but NPR and The Washington Post recently announced that a leap second will be added June 30, 2012. At 7:59:59 PM, Eastern time, the US Naval Observatory will skip a second to 8:00:00 PM.  Wikipedia offers detailed background on this concept.)     Extra time is a fond wish for many of us -- and Leonard Orr has penned a love poem suggesting how one more second might be delightfully crowded with so much more than could happen in "regular" time.