> one second doesn't matter, but it builds up. Less than you think. A part of the leap second is correcting an unpredictable random walk. The random walk pa

> one second doesn't matter, but it builds up. Less than you think. A part of the leap second is correcting an unpredictable random walk. The random walk part does not add up. The linear drift part does add up. We're still talking several thousand years to end up with just an hour offset. Just switching to a new timezone every few thousand years ("As of Jan 1st 6022, fifty years from now, all usage of Eastern timezone will switch to New Eastern timezone, which is an hour ahead.") would handle your civil usage concern fine. (and then in year 10022 they can switch to New New Eastern timezone, if there are any survivors of world war 5...)