Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Clive D.W. Feather
Tony Finch said: > Halsbury's Laws of England has some interesting (bizarre, self- > contradictory) paragraphs on the meaning of civil time, which I'll > append as a postscript because of their length. I'm going to comment on these, partly because Halsbury is well out of date. > 215. Local time.

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Steve Allen writes: >On Wed 2008-11-12T01:12:58 +, Poul-Henning Kamp hath writ: >The humans will adapt to the name change, even getting it fixed in >most documents and ancillary software long before the difference >between TI and UT gets to a few seconds. Livin

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Rob Seaman writes: >Meanwhile, the astronomers in this conversation have repeatedly >demonstrated the willingness to consider new options, [...] ... as long as they get things their way. None of the proposals from your hand have addressed the problems of the oth

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Rob Seaman
On Nov 12, 2008, at 6:30 AM, Rob Seaman wrote: "dawn's early light" This better fits twilight. Perhaps "crack of dawn"? ___ LEAPSECS mailing list LEAPSECS@leapsecond.com http://six.pairlist.net/mailman/listinfo/leapsecs

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Tony Finch
On Wed, 12 Nov 2008, Rob Seaman wrote: > Clive D.W. Feather wrote: > > > No, it's because there are no applications where people need to say "what > > would my GPS receiver had said in 1751?". Whereas people do need to > > represent older times in (say) POSIX time. > > Do they? Example use case fr

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Rob Seaman
Poul-Henning Kamp wrote: Living in a country that legally still uses 'mean solar time on the 15the eastern longitude' I find this very hard to belive. We have not even come close to eradicating usage of GMT as an alias for UTC. Thanks for emphasizing this point. I think it is safe to say, t

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread John Cowan
Clive D.W. Feather scripsit: > I don't think that R. v Haddock on the meaning of "general purposes" is > settled law in the UK, Doubtless not. But, if you will, remind us just which piece of jolly ligitation that was? There were so many of them -- With techies, I've generally found

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Rob Seaman writes: >Poul-Henning Kamp wrote: > >However, surely the point of coupling TI with the zoneinfo notion - >just for the sake of argument - is to simply start distributing TI >instead of UTC. Then UTC - a flavor of Universal Time, an alias for >Green

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Peter Bunclark
On Wed, 12 Nov 2008, Poul-Henning Kamp wrote: > In message <[EMAIL PROTECTED]>, Rob Seaman writes: > >Poul-Henning Kamp wrote: > > > > >However, surely the point of coupling TI with the zoneinfo notion - > >just for the sake of argument - is to simply start distributing TI > >instead of UTC. Th

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Clive D.W. Feather
John Cowan said: > Clive D.W. Feather scripsit: > > I don't think that R. v Haddock on the meaning of "general purposes" is > > settled law in the UK, > > Doubtless not. But, if you will, remind us just which piece of jolly > ligitation that was? There were so many of them Drinking is not

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Rob Seaman
Poul-Henning Kamp wrote:And illegal on many systems, including all USGOV owned and operated systems.I thought the ITU had treaty status, therefore that they could decree that we all must henceforth wear Goofy watches that run CCW, and that this sober determination would supersede all other laws of

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Tony Finch
On Wed, 12 Nov 2008, Rob Seaman wrote: > > However, surely the point of coupling TI with the zoneinfo notion - just for > the sake of argument - is to simply start distributing TI instead of UTC. > Then UTC - a flavor of Universal Time, an alias for Greenwich Mean Time (which > as you say is far fr

[LEAPSECS] Synchronization requirement

2008-11-12 Thread Gerard Ashton
There have been requests on this list to gather requirements for civil time keeping. I would like to suggest one. Anyone who has ever participated in an EBay auction will have noticed that all the savvy bidders wait to the very end to submit bids. However, mismatches between the bidder's clock and

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Clive D.W. Feather
Poul-Henning Kamp said: > Another issue is that exception rules should not trigger so seldom > that people forget about them. > > Again the 400 year rule is exhibit number 1, and exhibit number two > could be how Sweden failed to follow their own established rules, > trying to recover from the old

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Rob Seaman
Tony Finch wrote: On Wed, 12 Nov 2008, Rob Seaman wrote: However, surely the point of coupling TI with the zoneinfo notion - just for the sake of argument - is to simply start distributing TI instead of UTC. Then UTC - a flavor of Universal Time, an alias for Greenwich Mean Time (which a

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Rob Seaman
Clive D.W. Feather wrote: My legal research has failed to find any definition in statute of "sunrise" and "sunset". In particular, it is not clear whether sunset is when the (1) upper limb of the sun disappears below (2) centre of the sun passes (3) lower limb of the sun first touches the (4

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Peter Bunclark writes: >> And illegal on many systems, including all USGOV owned and operated >> systems. > >So would that mean that any USGOV owned and operated systems not running >NTP (Window boxes, for example), or those running NTP but are in the >middle of de

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, "Gerard Ashton" writes: >There have been requests on this list to gather requirements >for civil time keeping. I would like to suggest one. Anyone >who has ever participated in an EBay auction will have noticed >that all the savvy bidders wait to the very end to sub

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Rob Seaman
Clive D.W. Feather wrote: No, it's because there are no applications where people need to say "what would my GPS receiver had said in 1751?". Whereas people do need to represent older times in (say) POSIX time. Do they? Example use case from 1751? __

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Tony Finch
On Wed, 12 Nov 2008, Rob Seaman wrote: > > Are people really convinced by the argument that badly implemented systems > should determine policy? I'm arguing about deployment pragmatics. Note that the systems aren't badly implemented, they are just following specs based on UT sans leap seconds. If

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Tony Finch
On Wed, 12 Nov 2008, Poul-Henning Kamp wrote: > > Savy auction houses deal with such behaviour by not closing the > auction "while bidding is ongoing", typically implementing a > 30 second wait after the most recent bid before closing. > Why eBay doesn't have always been a mystery to me, people wou

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Rob Seaman writes: >Poul-Henning Kamp wrote: > >> And illegal on many systems, including all USGOV owned and operated >> systems. > >I thought the ITU had treaty status, therefore that they could decree >that we all must henceforth wear Goofy watches that run CC

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Tony F inch writes: >On Wed, 12 Nov 2008, Poul-Henning Kamp wrote: >> >> Savy auction houses deal with such behaviour by not closing the >> auction "while bidding is ongoing", typically implementing a >> 30 second wait after the most recent bid before closing. >> Why

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread christopher hoover
Gerry Ashton wrote: > There have been requests on this list to gather requirements > for civil time keeping. I would like to suggest one. Anyone > > Let me summarize my requirement: > >The legal definition of time shall be sufficiently >unambiguous that those with adequate equipment will >

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Steve Allen writes: >Standards and laws are commonly disregarded, especially when those >ignore the practicalities of reality. > >Worrying about the effect on the documentation aspects of deployed >systems did not stop the CCIR from declaring a change to leap second

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread John Cowan
Rob Seaman scripsit: > I thought the ITU had treaty status, therefore that they could decree > that we all must henceforth wear Goofy watches that run CCW, and that > this sober determination would supersede all other laws of God and man. Even if it were a treaty rather than an IGO, treaties

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Gerard Ashton
I'm just stating a requirement. I leave open the possibility that other requirements might be more stringent, thus making my requirement redundant. Gerry Ashton -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of christopher hoover Sent: Wednesday, November 1

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread John Cowan
Poul-Henning Kamp scripsit: > >They'd never be able to close any auctions :-) > > They would, it works fine in most real-life auction houses. Real-life auction rooms don't routinely have tens of active bidders for a particular item. Waiting does not scale. -- MEET US AT POINT ORANGE AT MIDN

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Peter Bunclark
On Wed, 12 Nov 2008, Gerard Ashton wrote: > There have been requests on this list to gather requirements > for civil time keeping. I would like to suggest one. Anyone > who has ever participated in an EBay auction will have noticed > that all the savvy bidders wait to the very end to submit bids

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Clive D.W. Feather
Gerard Ashton said: > This would make the current > civil time definitions inadequate, because at least one country, > the UK, specifies Greenwich Mean Time as their basis of civil time > and failed to address proposals to clarify whether this means > UT1 or UTC. You fail to understand what they a

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Gerard Ashton
I consider the matter of whether for civil time-keeping purposes, GMT is, or is not, UTC, is unresolved until the highest court in the UK rules on a case where the difference is important. Courts sometimes pay more attention to conduct than words, and I gather that most clocks in the UK are set acc

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Steve Allen
Standards and laws are commonly disregarded, especially when those ignore the practicalities of reality. Worrying about the effect on the documentation aspects of deployed systems did not stop the CCIR from declaring a change to leap seconds in 1970. During the 1960s the CCIR was recommending tha

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Clive D.W. Feather
Steve Allen said: > Here's an interesting point. Nobody misinterprets GPS time. > Nobody tries to extrapolate it backwards and make algorithms > about proleptic GPS time. That's because GPS time simply > did not exist prior to 1980-01-06. Nobody can screw it up > because GPS time is exactly and

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, John Cowan writes: >Poul-Henning Kamp scripsit: > >> >They'd never be able to close any auctions :-) >> >> They would, it works fine in most real-life auction houses. > >Real-life auction rooms don't routinely have tens of active bidders >for a particular item. W

[LEAPSECS] stack overflow

2008-11-12 Thread Rob Seaman
Just back from the dentist and can't possibly spare the time to read all the intervening messages with the attention they deserve, so I'll just recommend (highly!) the book I'm currently reading: "The Stuff of Thought", by Steven Pinker And pass on a lovely quote from Immanuel Kant t

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread John Cowan
Clive D.W. Feather scripsit: > With two-bis being the misinterpretation of "every four years" in the > Julian calendar, so that Feb 29th was added every *three* years for some > time (Wikipedia suggests the most likely sequence was 44, 41, 38, 35, 32, > 29, 26, 23, 20, 17, 14, 11, 8 BC, then a hia

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread John Cowan
Clive D.W. Feather scripsit: > > > I don't think that R. v Haddock on the meaning of "general purposes" is > > > settled law in the UK, > > > > Doubtless not. But, if you will, remind us just which piece of jolly > > ligitation that was? There were so many of them > > Drinking is not a "g

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread John Cowan
Peter Bunclark scripsit: > So would that mean that any USGOV owned and operated systems not running > NTP (Window boxes, for example), or those running NTP but are in the > middle of dealing with a leapsecond, are being illegally operated? Modern Windows boxes do indeed do NTP, or rather SNTP. -

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Greg Hennessy
The adoption of TI would be massive and immediate. And illegal on many systems, including all USGOV owned and operated systems. Are you sure you want to be commenting on what is and is not legal on US computers when you post from a .dk address?

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Jonathan E. Hardis
In message <[EMAIL PROTECTED]>, Rob Seaman writes: I thought USA went out of their way some years back, to make it clear that the relevant secretary (of commerce ?) decided what US timekeeping was and that it certainly had nothing to do with GMT ? Or was that laying the ground for US unlateral a

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Joseph S. Myers
On Wed, 12 Nov 2008, Jonathan E. Hardis wrote: > * Who can cite case law, where a court has had to decide an actual > controversy on timekeeping? (Courts don't deal with hypothetical > controversies or arguments over trivia. De minimis non curat lex.) Curtis v. March, cited earlier in

Re: [LEAPSECS] Synchronization requirement

2008-11-12 Thread Brian Garrett
- Original Message - From: "Poul-Henning Kamp" <[EMAIL PROTECTED]> To: "Leap Second Discussion List" Sent: Wednesday, November 12, 2008 10:58 AM Subject: Re: [LEAPSECS] Synchronization requirement In message <[EMAIL PROTECTED]>, John Cowan writes: Poul-Henning Kamp scripsit: >The

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Brian Garrett
- Original Message - From: "Rob Seaman" <[EMAIL PROTECTED]> To: "Leap Second Discussion List" Sent: Wednesday, November 12, 2008 6:48 AM Subject: Re: [LEAPSECS] The relation between calendars and leap seconds. On Nov 12, 2008, at 6:30 AM, Rob Seaman wrote: "dawn's early light" T

Re: [LEAPSECS] The relation between calendars and leap seconds.

2008-11-12 Thread Steve Allen
On Wed 2008-11-12T09:04:31 +, Clive D.W. Feather hath writ: > My legal research has failed to find any definition in statute of "sunrise" > and "sunset". Sunset? To quote from Buffy the Vampire Slayer "DoubleMeat Palace": It's a process. As seen in the following link, especially in the first

[LEAPSECS] Synchronization requirement?

2008-11-12 Thread Rob Seaman
Brian Garrett wrote: I was wondering when somebody was going to mention sniper bids. These are automated and require reliable synchronization so as to get bids in at literally the very last second. [...] laws that reference civil time to actual timescales, instead of "mean solar time of 1