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    Re: Leap second on December 31
    From: Bob Goethe
    Date: 2017 Jan 1, 08:10 -0800

    I just phoned WWV to listen to the pips.  They have a double-tap just after the top of the minute to indicate how far ahead/behind UTC is from UT1.  I erred in my post of a few minutes ago.  Yesterday UTC was 0.4 second fast.  Today, after the leap second, it is 0.6 seconds slow.

    But the main point is that you don't have to correct your Air Almanac times to cope with the leap second.  The leap second is there to keep the clocks of the world synchronized (within 0.9 seconds one way or the other) with your Air Almanac.

    Bob

       
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