Very good question. I can only think it's too randomize it a little so you don't...

		excuse-me on June 14, 2012 \| parent \| context \| favorite \| on: June 30th 2012 will be 1 second longer: 23:59:60 Very good question. I can only think it's too randomize it a little so you don't end up changing clocks only by powers of 2 and showing up some weird bug.