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#2
July 9th 05, 04:30 PM
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So, Sam.... What does this mean? I know that the navigation message
contains the information about the accumulated leap seconds. I even saw the "A leap second is coming!" part of the navigation message. I don't know if my old yellow Etrex handles this warning properly. It's never SEEN a leap second So are there any neat experiments to do at 7PM EST New Year's Eve? And has anyone told the people wo run Big Ben in London? 
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#3
July 9th 05, 06:47 PM
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" writes:
So, Sam.... What does this mean? I know that the navigation message contains the information about the accumulated leap seconds. I even saw the "A leap second is coming!" part of the navigation message. I don't know if my old yellow Etrex handles this warning properly. It's never SEEN a leap second So are there any neat experiments to do at 7PM EST New Year's Eve? Probably depends on what receiver you have. My observations of a couple of Garmin handhelds at the last leap second suggest that they don't do anything at the leap second itself - they continue counting time as if it had not happened. Thus, after midnight, the display is an additional second slow with respect to UTC. But the displayed time is *already* about a second late all the time, so it can't be considered a precision time reference in any case. When the unit is turned off and back on, it seems to incorporate the new leap second offset at that point. On the other hand, a GPS-25 board receiver, one that provides a 1 PPS output for more precise timing use, did handle the leap second properly. The NMEA output counted 23:59:59 23:59:60 00:00:00 Dave
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#4
July 9th 05, 07:52 PM
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#5
July 9th 05, 08:15 PM
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#6
July 11th 05, 01:32 AM
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Dr John Stockton wrote:
JRS: In article .com , dated Sat, 9 Jul 2005 08:30:10, seen in news:sci.astro.amateur, posted : I even saw the "A leap second is coming!" part of the navigation message. And has anyone told the people wo run Big Ben in London? Why should they? Big Ben is the great bell in the clock tower of the Houses of Parliament. It is the people who run the clock itself who need to know, and I am confident that they are well aware of the occurrence of Leap Seconds and have adequate arrangements for knowing about them. But it would be rather confusing if the bell chimed out of synch with the time shown on the clock.  -- Odysseus
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#7
July 11th 05, 05:23 PM
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I even
saw the "A leap second is coming!" part of the navigation message. And has anyone told the people wo run Big Ben in London? Why should they? Big Ben is the great bell in the clock tower of the Houses of Parliament. It is the people who run the clock itself who need to know, and I am confident that they are well aware of the occurrence of Leap Seconds and have adequate arrangements for knowing about them. Damn and Blast Sirrah! I'll get "My Man" to remove another fine coin of the Realm to reduce the timewarp factor and add a Ha'penny to compensate for the bird **** on the pendulum........ ;-^
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