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    Re: GPS as a time authority
    From: James N Wilson
    Date: 2009 Sep 14, 14:42 -0700

    As scorer for the Los Angeles Yacht Club for over twenty years, I watched
    the transition to GPS time. Before, we used WWV to set a timer box, but a
    new regime wanted to use GPS and hand held watches. I still kept WWV
    time, but had to accede to the sailors, all of whom used GPS time. And
    for the tail enders in long distance races, we required that the
    finishing yachts take their own time. That was GPS, of course, so I had
    to blend in. I never noted more than a second difference, but I've heard
    of larger amounts. The message is that GPS time isn't as accurate as WWV
    time, and navigators need to know this.
    Jim Wilson
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