Re: two world clocks AND Time after Time

2005-01-25 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Clive D.W. Feather writes: Poul-Henning Kamp said: [That is, if the equinox was actually on March 9th, would anyone outside the astronomical community notice?] I doubt it. I'm not so certain about the summer and winter solstice however. here in the nordic

Re: two world clocks AND Time after Time

2005-01-25 Thread Steve Allen
On Tue 2005-01-25T09:57:46 +, Clive D.W. Feather hath writ: I think you're out by a factor of 10. Would the Man On The Clapham Omnibus be able to identify the solstice or equinox to within 14 days? Other than knowing the conventional dates? [That is, if the equinox was actually on March

Re: Time after Time

2005-01-24 Thread Markus Kuhn
John Cowan wrote on 2005-01-23 18:37 UTC: Markus Kuhn scripsit: UTC currently certainly has *no* two 1-h leaps every year. There seems to be persistent confusion on what is meant by the term leap hour. Why? I understand it as a secular change to the various LCT offsets, made either all

Re: two world clocks AND Time after Time

2005-01-24 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Tom Van Baak writes: Another observation is that our local newspaper always prints Sun and Moon rise and set times. But not time of noon. Why is this? Maybe it's just our paper (noon implies sun and we don't see much of it here in Seattle). Why is the instant of

Re: two world clocks AND Time after Time

2005-01-24 Thread Steve Allen
On Mon 2005-01-24T00:50:10 -0800, Tom Van Baak hath writ: Isn't knowing when noon is already a specialist operation? I mean, most people could tell you when noon is to within an hour or two or three, but finer than that requires a far amount of daily mental calculation, no? Noon has long

Re: Time after Time

2005-01-24 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Markus Kuhn writes: You surely must have seen my detailed UTS proposal for how UTC leap seconds should be handled trivially and safely by the overwhelming majority of computer applications, without any special considerations whatsoever by normal application

Re: two world clocks AND Time after Time

2005-01-24 Thread Poul-Henning Kamp
In message [EMAIL PROTECTED], Steve Allen writes: On Mon 2005-01-24T00:50:10 -0800, Tom Van Baak hath writ: Isn't knowing when noon is already a specialist operation? I mean, most people could tell you when noon is to within an hour or two or three, but finer than that requires a far amount of

Re: two world clocks AND Time after Time

2005-01-24 Thread John Cowan
Steve Allen scripsit: What we are being told by the Time Lords is that, starting from a date in the near future, knowing when noon is will also be a specialist operation. Already true. For many months of the year, solar noon is closer to 1 PM, or even 1:30 PM, in a great many countries, and

Re: Time after Time

2005-01-23 Thread Markus Kuhn
Poul-Henning Kamp wrote on 2005-01-23 09:00 UTC: any leap hours that prevented this would, if ever implemented, be even more traumatic than leap seconds are now. they already happen here twice a year, and by now even Microsoft has gotten it right. OBJECTION, your Time Lords! UTC currently

Re: Time after Time

2005-01-23 Thread John Cowan
Markus Kuhn scripsit: UTC currently certainly has *no* two 1-h leaps every year. There seems to be persistent confusion on what is meant by the term leap hour. I understand it as a secular change to the various LCT offsets, made either all at once (on 1 Jan 2600, say) or on an ad-lib basis.

Re: two world clocks AND Time after Time

2005-01-23 Thread Steve Allen
On Thu 2005-01-20T14:59:18 -0700, Rob Seaman hath writ: Leap seconds are a perfectly workable mechanism. Systems that don't need time-of-day should use TAI. Systems that do need time-of-day often benefit from the 0.9s approximation to UT1 that UTC currently provides. Let's stop pretending

Time after Time

2005-01-22 Thread Daniel R. Tobias
I sure hope that the future of mankind's timekeeping systems doesn't get decided by an Internet flame war between contending groups of geeks... As I see it, the dispute comes from the fact that people want two different, irreconcilable types of time, time of day (earth/solar angle) and constant