Re: [LEAPSECS] Coming of age in the solar system

Poul-Henning Kamp wrote: > So far I don't recall one single example having been proffered outside > astronomy ? All other examples are *inside* astronomy. Literally. ___ LEAPSECS mailing list LEAPSECS@leapsecond.com http://six.pairlist.net/mailman/l

Re: [LEAPSECS] why not ITU-T?

In message: Nero Imhard writes: : : On 2010-09-06, at 19:28, Poul-Henning Kamp wrote: : > : > We in the NTP crew would love to own it, but I can guarantee you : > that leap seconds would not survive long if it were offered to us :-) : : Except that the ntp crew is much more likely

Re: [LEAPSECS] Coming of age in the solar system

Paul Sheer wrote: > We can *never* go back once this bound grows. Never say never: if I came to power as a dictator in some 3rd world country, I would have absolutely no problem with issuing an edict to the entire population to adjust their clocks by, say, 30.4851122 seconds at a specified point

Re: [LEAPSECS] Coming of age in the solar system

On Sun, 2010-09-05 at 16:39 -0700, Rob Seaman wrote: > > And there is the unstated assumption again, that not only > could nothing bad possibly happen if leap seconds are > ceased and DUT1 (implicit or explicit) grows without > bound - but that nothing in our vastly complex social > and technolo

Re: [LEAPSECS] why not ITU-T?

On 2010-09-06, at 19:28, Poul-Henning Kamp wrote: > > We in the NTP crew would love to own it, but I can guarantee you > that leap seconds would not survive long if it were offered to us :-) Except that the ntp crew is much more likely to obtain this goal by switching to TAI instead of upsettin

Re: [LEAPSECS] why not ITU-T?

In message <20100906171714.ga27...@ucolick.org>, Steve Allen writes: >On Mon 2010-09-06T17:11:11 +, Poul-Henning Kamp hath writ: >As such it is long the case that time decisively belongs to >Dave Mills and the NTP crew. We in the NTP crew would love to own it, but I can guarantee you that lea

Re: [LEAPSECS] why not ITU-T?

On Mon 2010-09-06T17:11:11 +, Poul-Henning Kamp hath writ: > So, Astronomers should Own Time, because they did it first, but > ITU-T should take time over from ITU-R because they are more recent ? Rather because the ITU-T process is not as dysfunctional as the ITU-R. > Given that ITU-T is irr

Re: [LEAPSECS] Coming of age in the solar system

On Mon, 6 Sep 2010, Poul-Henning Kamp wrote: > > There was a lot of noise in EU context, and that resulted in one of the > "technical requirements" for EU membership being that countries do not > f**k with their summertime, and presumably timezones, with anything less > than 5 years notice. Intere

Re: [LEAPSECS] why not ITU-T?

In message <20100906164911.ga27...@ucolick.org>, Steve Allen writes: >Is it already the case that the de facto authority over the time scale >of the world should reside with the ITU-T rather than with the ITU-R? So, Astronomers should Own Time, because they did it first, but ITU-T should take tim

[LEAPSECS] why not ITU-T?

I wonder if there is not some perceived urgency for the ITU-R to act on UTC because of the changes in technology. ITU-R covers broadcasts, but most of the discussion in this mail refers to the internet. That is covered by the ITU-T, not the ITU-R. In response to the rapid evolution in computing t

Re: [LEAPSECS] Coming of age in the solar system

On Mon, September 6, 2010 17:06, Poul-Henning Kamp wrote: > In message > <846fe1ddc827bb1b14a27a4a17b8865d.squir...@mail.batten.eu.org>, "Ian > Batten" writes: > >> On Mon, September 6, 2010 15:28, Steve Allen wrote: >> > >> Whichever, I think the chances of it being done with five >> years' notice

Re: [LEAPSECS] Coming of age in the solar system

Nero Imhard wrote: > I had already mentioned the Bernhardt precision sundial on this list. Its > precision is such that one or more adjustments would likely be necessary > during the lifetime of the sundial. So, given the sword of Damocles > hanging over UTC's head, I guess the smart thing to do

Re: [LEAPSECS] Coming of age in the solar system

In message <846fe1ddc827bb1b14a27a4a17b8865d.squir...@mail.batten.eu.org>, "Ian Batten" writes: >On Mon, September 6, 2010 15:28, Steve Allen wrote: >Whichever, I think the chances of it being done with five >years' notice are low: once passed, a government will want to reap the >political benefi

Re: [LEAPSECS] Coming of age in the solar system

On Mon, September 6, 2010 15:28, Steve Allen wrote: > On Mon 2010-09-06T05:33:27 +, Poul-Henning Kamp hath writ: > [regarding changes in the schedule of daylight/summer time] > > Part of this could be explained as "war is hell", and part as > "what do you expect from colonies established by tra

Re: [LEAPSECS] Coming of age in the solar system

On Mon 2010-09-06T05:33:27 +, Poul-Henning Kamp hath writ: [regarding changes in the schedule of daylight/summer time] > 2. In civilized parts of the world, we know about these days 5+ years >in advance. Let's see, Australia prior to the 2000 Olympics, less than 1 year. The 1918 change in

Re: [LEAPSECS] Coming of age in the solar system

On Mon 2010-09-06T10:50:55 +0100, Tony Finch hath writ: > There is a lot of software that depends on the simple arithmetic > relationship between time_t and broken-down zulu time. So another of the questions that has not been asked is a detailed survey of such applications in the context of having

Re: [LEAPSECS] LEAPSECS Digest, Vol 45, Issue 1

David Grellscheid said: > The calendar-change legislation took care of that by moving the end date > of the tax year from the traditional quarter-day of March 25th to April 6th. > > Sadly, there was no Hansard yet to record the moment when the Lords > realised they would lose 12 days worth of re

Re: [LEAPSECS] LEAPSECS Digest, Vol 45, Issue 1

Ian Batten said: >> The calendar-change legislation took care of that by moving the end >> date of the tax year from the traditional quarter-day of March 25th >> to April 6th. > March 25 is, of course, Lady Day. More to the point, it was also New Year's Day in England until 31st December 1751

Re: [LEAPSECS] Coming of age in the solar system

Some of us have designed/rebuilt sundials: . There is a very knowledgeable sundial group, which includes a number of scientists and others familiar with the astrono

Re: [LEAPSECS] Coming of age in the solar system

Roger Stapleton wrote: > Perhaps there is nobody on this list who designs and builds sundials? > They are usually artsist/craftsman and NOT astronomers. I had already mentioned the Bernhardt precision sundial on this list. Its precision is such that one or more adjustments would likely be necessar

Re: [LEAPSECS] Coming of age in the solar system

On Mon, 6 Sep 2010, Poul-Henning Kamp wrote: In message , Rob Seaman writes: On Sep 5, 2010, at 8:00 AM, Poul-Henning Kamp wrote: Oh! Other than astronomy - the one and only place we've looked sufficiently well enough to know the answer. So far I don't recall one single example having bee

Re: [LEAPSECS] Coming of age in the solar system

On 5 Sep 2010, at 23:39, Steve Allen wrote: > > It seems to me that the notion of "atomic days" in time_t which differ > from civil time is not any more cumbersome than the problems > encountered by programs which don't take care to note the 23 hour > civil day and the 25 hour civil day. There