[LEAPSECS] Leap Sec vs Y2K

[Paul Sheer]

And is this 1000km radius precisely syncronized to all other 1000km
radii around all airports in the world?

No it need not be. I'm guessing that some may not even use NTP at all -
or even be connected to the  Internet to be able to use NTP.

You are trying to paint an illusion that all clocks in the world tick
over in unison.

They don't - it's a cacophony with very few clocks beating in time.

There is no point in discussing leap seconds with people that have a
dillusional picture in their minds of all the words computers ticking
over to a precise heartbeat that suddently starts to defibrillate when
the leap second comes along in June or December.

-paul


On Sun, 2010-12-12 at 09:26 +0000, Poul-Henning Kamp wrote:


> In message <1292118117.24926.52.camel at localhost>, Paul Sheer writes:

> 

> >I choose the solution that makes my flight the cheepest.

> 

> It is not a matter of flight being cheap or expensive.

> 

> If you only synchronize computer "on the order of minutes" the modern

> airport ceases to function as such.

> 

> During initial and terminal phases, a modern jetplane move 100m/s and

> many major airports have runway use in 30 second timeslots.  You do

> the math.

> 

> Radar stitching requires 3msec synchronization and timestamping, throughout

> the entire area being stitched, often a radius of up to 1000 km.

> 

> You have just confirmed my suspicion that you have not a wisper of

> a clue about what you are pontificating about.

> 

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