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Re: leap seconds a navigational hazard, says expert
From: Brooke Clarke
Date: 2003 Aug 8, 18:32 -0700
From: Brooke Clarke
Date: 2003 Aug 8, 18:32 -0700
Hi Jared: The GPS system does not use leap second as this would cause an ambiguity so GPS will drift apart from UTC as time goes on and the Earth slows down. The GPS system does broadcast the difference between GPS time and UTC so a GPS receiver can display UTC. I think it is the default in most modern GPS receivers to display UTC or some time zone derived from UTC so you probably will not see a GPS receiver displaying GPS time, unless you go into some menu can change the display. I wonder if those who propose doing away with UTC have some agenda to make money from that change. Have Fun, Brooke Clarke, N6GCE Jared Sherman wrote: >So, if I understand this, an almanac is based on Universal Co-ordinated Time and if one tried to use a GPS as the time base when doing celestial, one would be off by 13 seconds? > >I'd have to check but don't recall my watch (chronometer rated) being that far off from my GPS, when I use the USNO as the time standard to hack the watch. > >SHould it be? > > > >