Re: [LEAPSECS] future access to solar time?

2022-11-20 Thread Clive D.W. Feather
seconds east of the prime meridian - I'm probably closest to it of anyone on this list. > The clock on the wall tells the time for social > purposes, not for the position of the sun in the sky. Right. And that's without the equation of time coming into the, um, equation. -- Clive D.W. Feather

Re: [LEAPSECS] leap minute or hour

2022-11-15 Thread Clive D.W. Feather
ith what people are used to, which is (mostly) shifts of an hour. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ L

Re: [LEAPSECS] leap minute or hour

2022-11-14 Thread Clive D.W. Feather
Poul-Henning Kamp said: > Full hour shifts, on the other hand, can be done merely by changing > the time-zone, and they can be done through the normal political > process, aligned to recognized borders. Something I've been arguing for a long time. -- Clive D.W. Feather | I

Re: [LEAPSECS] Celebrating the new year a few seconds late

2019-01-05 Thread Clive D.W. Feather
, with colour and simple graphics available. Often a single "page" would actually be a cyclic sequence of pages, changing every 20 seconds or so. Subtitles (on page 888) were just one use. http://teletext.mb21.co.uk/gallery/ceefax/ or google "Ceefax" for more information. --

Re: [LEAPSECS] more Windows 10 leap details

2018-10-19 Thread Clive D.W. Feather
they provide a mechanism for inserting a leap second for testing purposes (good), but I can't see any description of that mechanism (bad). -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Sp

Re: [LEAPSECS] Negative TAI-UTC

2017-02-07 Thread Clive D.W. Feather
Tom Van Baak said: > Yes, of course. This is not the 1960's where saving a byte was an all-day > decision. The spec is clear. Follow it. Actually, some of us work in fields where every byte is still expensive. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davr

[LEAPSECS] Negative TAI-UTC

2017-02-04 Thread Clive D.W. Feather
Looking only into the future, not historical data, what do people think the probability is that TAI-UTC will ever be negative? Should data structures be designed to handle this case or not bother? -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org

Re: [LEAPSECS] BBC radio Crowd Science

2017-02-04 Thread Clive D.W. Feather
if Delta_at_TAI (t + 1) <= E L = linearize (t) - E - F D = int(L / 86400) H = int((L - D * 86400) / 3600) M = int((L - D * 86400 - H * 3600) / 60) S = L - D * 86400 - H * 3600 - M * 60 + F (F is 1 if and only if the UTC time is XX:XX:XX:60.X) -- Clive D.W. Feathe

Re: [LEAPSECS] alternative to smearing

2017-01-12 Thread Clive D.W. Feather
really want the fundamental timescale of society, then your zero point should be the date of the first creation of the world by his Supreme Noodliness the FSM. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org

Re: [LEAPSECS] alternative to smearing

2017-01-11 Thread Clive D.W. Feather
notes "At various times and in various places throughout medieval Christian Europe, the new year was celebrated on Dec. 25, the birth of Jesus; March 1; March 25, the Feast of the Annunciation; and Easter.". -- Clive D.W. Feather | If you lie to the compiler, Email:

Re: [LEAPSECS] alternative to smearing

2017-01-11 Thread Clive D.W. Feather
other. That's not a problem - there's nothing magical about negative year numbers. You might just as well argue that we should use LCDs, where the zero point is the Mayan Long Count date 0.0.0.0.0 (-3113-08-11 PG). -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davro

Re: [LEAPSECS] alternative to smearing

2017-01-04 Thread Clive D.W. Feather
I'm in favour of using "the existing noon-alignment knob (time zones) to keep noon at 12" if relevant local authorities want it to be (a lot seem to want noon at 13). -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its reven

Re: [LEAPSECS] Time math libraries, UTC to TAI

2017-01-02 Thread Clive D.W. Feather
med after some astronomer or other. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list

Re: [LEAPSECS] Greetings from an intercalary second

2017-01-01 Thread Clive D.W. Feather
Steve Summit said: > But on the wire it was: > > Date: Sat, 31 Dec 2016 18:59:60 -0500 That's what mutt showed me (I'm running sendmail on my own FreeBSD box). -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge.

Re: [LEAPSECS] 2016 is not tied for second longest year ever

2016-12-31 Thread Clive D.W. Feather
bout 708 AUC, with 15 months and 445 days? Surely that completely trumps 1712? -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44

Re: [LEAPSECS] [time-nuts] Leap second to be introduced at midnight UTC December 31 this year

2016-07-25 Thread Clive D.W. Feather
already defined. Leap seconds > would become a monthly normal instead of a rare event; that is, a regular > pain in the ass instead of an exceptional pain in the ass [1]. A problem is that each year requires either a zero change or a 2 or 4 second change. Not one second per year. -

Re: [LEAPSECS] Google, Amazon, now Microsoft

2015-06-01 Thread Clive D.W. Feather
on a regular basis, but I won't claim it's never happened. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Google, Amazon, now Microsoft

2015-06-01 Thread Clive D.W. Feather
(UTC+5) border. There don't seem to be roads, but an off-road vehicle ought to be able to do it in an hour. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Google, Amazon, now Microsoft

2015-06-01 Thread Clive D.W. Feather
, LV, MT, SK, and SV use terms equivalent to Greenwich, Greenwich Time, or GMT. DE, ES, FR, IT, NL, PT, and RO use terms equivalent to Universal Time. PL says uniwersalnego (GMT). DA and SL use UTC. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org

Re: [LEAPSECS] Letters Blogatory

2015-03-11 Thread Clive D.W. Feather
, if anything to do with his personal opinion on leap seconds. In other words: Yeah, he's entitled to his opinion, just like everybody else, but he doesn't have any special standing for his opinion, which as others have pointed out, interfaces badly with reality. Exactly. -- Clive D.W. Feather

Re: [LEAPSECS] The definition of a day

2015-01-29 Thread Clive D.W. Feather
to, as is the fact that the amount of change varies both within the year and from year to year. So there's nothing new for people to get used to. Simples. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org

Re: [LEAPSECS] DNS examples

2015-01-23 Thread Clive D.W. Feather
someone has already produced one. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS

Re: [LEAPSECS] DNS examples

2015-01-23 Thread Clive D.W. Feather
adjustment occurs you have to face a very elaborate conversion. No, you need to use a library that's already been written to do the job. Takes 10 seconds or so. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http

Re: [LEAPSECS] the big artillery

2014-11-06 Thread Clive D.W. Feather
small part second is short for pars minuta secunda, the second small part And I've seen third and fourth, with the obvious meaning, used in old documents. But etymology doesn't override present meanings. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org

Re: [LEAPSECS] the big artillery

2014-10-30 Thread Clive D.W. Feather
is chosen by the relevant lawmakers and is normally a multiple of 15 minutes. If you accept that these reasons override those for keeping leap seconds, then a name change won't make it easy. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its

Re: [LEAPSECS] Do lawyers care (know) about leap seconds?

2014-10-01 Thread Clive D.W. Feather
. Whether anyone has actually done so, I don't know. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS

Re: [LEAPSECS] Do lawyers care (know) about leap seconds?

2014-09-30 Thread Clive D.W. Feather
, no cite) that was decided on a matter of 8 seconds - from memory, an email sent 8 seconds after a midnight deadline. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973

Re: [LEAPSECS] Leap second relationship to ISO 8601

2014-08-28 Thread Clive D.W. Feather
less for those in Palestine.) -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS

Re: [LEAPSECS] Leap second relationship to ISO 8601

2014-08-28 Thread Clive D.W. Feather
account of daylight savings time, when what it means is 10:00 BST. Even worse is the ones that say 10:00 UTC+01:00, which actually mean 09:00 BST. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org

Re: [LEAPSECS] Leap second relationship to ISO 8601

2014-08-28 Thread Clive D.W. Feather
numbers, they are all showing the same time. [1] But see R.v Haddock [1967] BBC 1.4. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Solar time: From mean solar days, to mean solar years

2014-08-21 Thread Clive D.W. Feather
to handle, even if they don't all do it. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing

Re: [LEAPSECS] Definition of Standard time - Brooks Harris

2014-02-17 Thread Clive D.W. Feather
, I don't hear either term used very often in the UK, where we (almost) only have one time zone. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Definition of Standard time - Brooks Harris

2014-02-16 Thread Clive D.W. Feather
with my understanding of Standard time. But not mine. standard time is to be contrasted with local time. Both GMT and BST are standard time in the UK. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org

Re: [LEAPSECS] happy anniversary pips

2014-02-12 Thread Clive D.W. Feather
more from the large numbers of people in my industry that have failed to climb the complexity hill due to apathy, incompetence or both. Or they (or their bosses) have done a cost-benefit analysis and concluded it's not worth fixing. -- Clive D.W. Feather | If you lie to the compiler

Re: [LEAPSECS] happy anniversary pips

2014-02-12 Thread Clive D.W. Feather
inclusive. So we're talking a year or so lead time. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS

Re: [LEAPSECS] happy anniversary pips

2014-02-12 Thread Clive D.W. Feather
Brooks Harris said: D) Clarifying timezone guidelines, including standardizing international date line, UTC offset, and methods of Daylight instantiation Um, timezones are a political matter pure and simple. Who do you think is going to listen to you? -- Clive D.W. Feather

Re: [LEAPSECS] Pedagogy Greenwich

2014-02-12 Thread Clive D.W. Feather
maps) agrees and gives me coordinates of: OS X (Eastings) 547590 OS Y (Northings)177498 Nearest Post Code DA7 5SE Lat (WGS84) N51:28:38 (51.477194) Long (WGS84)E0:07:26 (0.123860) LR TQ475774 -- Clive D.W. Feather | If you lie to the compiler

Re: [LEAPSECS] Common Calendar Time (CCT) -Brooks Harris

2014-01-18 Thread Clive D.W. Feather
of the Coordinated Universal Time Bill. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list

Re: [LEAPSECS] The Once and Future Time

2014-01-18 Thread Clive D.W. Feather
Rob Seaman said: Systems, software and civilization depend on both interval time and Earth orientation time. In what way does civilization depend on Earth orientation time? Given that existing locations have local time several *hours* away from solar time, this seems unlikely. -- Clive D.W

Re: [LEAPSECS] Common Calendar Time (CCT) -Brooks Harris

2014-01-18 Thread Clive D.W. Feather
is still waiting. (I *did* get the double leap second error removed from ISO C, meaning it vanished from POSIX as well. Everyone agreed that this had been a simple misunderstanding of something back when the first version of the C Standard was being written.) -- Clive D.W. Feather

Re: [LEAPSECS] presentations from AAS Future of Time sessions

2014-01-17 Thread Clive D.W. Feather
in and strongly pushed by the military needs of the USA? What's the basis of this assertion? -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] LEAPSECS Digest, Vol 88, Issue 31

2014-01-15 Thread Clive D.W. Feather
, but assumes everyone already knows. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS

Re: [LEAPSECS] inaugural effects of abandoning leaps

2013-01-22 Thread Clive D.W. Feather
. In that case sane falls victim to corporate responsibility to the shareholder of insurers and insured. Lawsuits seem inevitable. We figured out how to fix that in 1750 (see 24 Geo.2 c.23 s.6). You may now stop panicking. -- Clive D.W. Feather | If you lie to the compiler, Email: cl

Re: [LEAPSECS] Testing computer leap-second handling

2012-07-10 Thread Clive D.W. Feather
right, then you are sadly deluded. * DST is an abomination That's probably the only thing you and I will agree on. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973

Re: [LEAPSECS] Testing computer leap-second handling

2012-07-10 Thread Clive D.W. Feather
Rob Seaman said: The issue (discussed many times previously) is to avoid introducing a secular trend into UTC. And, as also discussed, you have yet to show that the woman on the Clapham omnibus even cares. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org

Re: [LEAPSECS] Hetzner mail to customers: 1 megawatt more power due to leap second

2012-07-05 Thread Clive D.W. Feather
information is still a hassle and handling of the event isn't properly tested. What this rare event does isn't the main problem. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile

Re: [LEAPSECS] Calendar authority

2012-04-10 Thread Clive D.W. Feather
the constitutional issues correctly, the Church of England would be celebrating Easter next Sunday. That sounds like sufficient authority. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer

Re: [LEAPSECS] Calendar authority

2012-04-05 Thread Clive D.W. Feather
of national governments. See, for example, 24 Geo.2 c.23 or the decision of the National Convention on 1793-10-24. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973

Re: [LEAPSECS] Lets get REAL about time.

2012-01-27 Thread Clive D.W. Feather
the antepenultimate day of next month? Explain your working in each case. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Lets get REAL about time.

2012-01-27 Thread Clive D.W. Feather
. In the format above, those calculations are easy. Okay, all of those three (as amended in the first case) are of that form: 2012-01-30 + 1 month 2012-02-29 + 4 months 2012-02-27 + 4 months and let me add: 2011-02-28 + 1 year -- Clive D.W. Feather | If you lie to the compiler

Re: [LEAPSECS] Lets get REAL about time.

2012-01-27 Thread Clive D.W. Feather
to the previous statement. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS

Re: [LEAPSECS] Lets get REAL about time.

2012-01-27 Thread Clive D.W. Feather
to catch. It's not like doing a network protocol where there's all kinds of random events sticking their nose in.) -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Multi-timezone meetings

2012-01-26 Thread Clive D.W. Feather
Rob Seaman said: You've imposed the additional requirement that you can't have a primary timezone, for political reasons. Requirements are discovered, not imposed. This from the person who insists that a priori civil time must synchronize with the sun? -- Clive D.W. Feather

Re: [LEAPSECS] Leap second on analog watch

2012-01-26 Thread Clive D.W. Feather
times an hour was referring to the five minute cadence, Yes: my memory was that it was every 15 minutes, not every 5. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973

Re: [LEAPSECS] Leap second on analog watch

2012-01-25 Thread Clive D.W. Feather
4 times an hour. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS@leapsecond.com

Re: [LEAPSECS] Lets get REAL about time.

2012-01-24 Thread Clive D.W. Feather
. And that, I think, matches Tony Finch's point: for many things you don't care about the interval, you care about the end time in the *relevant* time zone. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org

Re: [LEAPSECS] Lets get REAL about time.

2012-01-24 Thread Clive D.W. Feather
. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS@leapsecond.com http

Re: [LEAPSECS] Lets get REAL about time.

2012-01-24 Thread Clive D.W. Feather
of whether daylight saving time is in effect or not. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS

Re: [LEAPSECS] ISO TC 37

2012-01-18 Thread Clive D.W. Feather
, deed, notice, or other document whatsoever and doesn't seem to recognize the possibility that someone might explicitly put a time zone other than GMT/BST, apart from the exemption for astronomers.) -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org

Re: [LEAPSECS] while we wait...

2012-01-18 Thread Clive D.W. Feather
. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS@leapsecond.com http

Re: [LEAPSECS] ISO TC 37

2012-01-18 Thread Clive D.W. Feather
it a while later when I can skip through the adverts and/or boring bits. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Straw men

2012-01-10 Thread Clive D.W. Feather
, though. I might try it on some lawyers. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list

Re: [LEAPSECS] China move could call time on GMT

2012-01-09 Thread Clive D.W. Feather
to that. Indeed. But Rob *defines* time as earth angle and then tries to tell us we're breaking the whole world. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Straw men

2012-01-09 Thread Clive D.W. Feather
purely atomic timescale many minutes or hours in error at a future epoch with no plan for mitigation. They won't be in error - that's another of your misrepresentations. They will be different to UT, deliberately. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org

Re: [LEAPSECS] China move could call time on GMT

2012-01-09 Thread Clive D.W. Feather
are mostly in zone 1, with all of the EU parts in zone 1 [DK, NL] * 2 are mostly in zone 1 [ES, FR] * 2 are mostly in zone 0 [GB, PT] * 1 is in zone 0 [IE] The four microstates are all in zone 1. The five candidates are in 0, 1, 1, 2, and 2. -- Clive D.W. Feather | If you lie to the compiler

Re: [LEAPSECS] Straw men

2012-01-09 Thread Clive D.W. Feather
this such that different localities will separately realize whatever synchronization they deem necessary. That is total nonsense. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973

Re: [LEAPSECS] Straw men

2012-01-09 Thread Clive D.W. Feather
of CSE (remember those?) examiners, pointing out that Y2k was on its way and therefore answers that allowed for 4 digit years should not be penalised. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org

Re: [LEAPSECS] Bulletin C number 43

2012-01-06 Thread Clive D.W. Feather
will be a Saturday, though the leap second will happen on the Sunday in my local time zone. 2012-12-31 will be a Monday. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile

Re: [LEAPSECS] What is GMT?

2012-01-05 Thread Clive D.W. Feather
Michael Sokolov said: For me GMT has a very simple meaning: it basically means the exact timescale doesn't matter, it can be anything as long as it comes from someone like Rob Seaman and NOT from someone like PHK. Who let Humpty-Dumpty on to this list? -- Clive D.W. Feather | If you

Re: [LEAPSECS] China move could call time on GMT

2012-01-04 Thread Clive D.W. Feather
Ian Batten said: Given there's some ambiguity about leap-year rules out into the far future anyway, There is? Both the Papal bull and UK legislation look clear enough to me. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge

Re: [LEAPSECS] Leap Day: Samoa to skip Dec 30

2012-01-03 Thread Clive D.W. Feather
. But Hawaii and Rapa Nui are going to want to stay on the same day as the rest of their country, and I don't see the Americas being particularly attracted to New Zealand. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http

Re: [LEAPSECS] Computer Network Time Synchronization, 2nd Ed.

2011-12-08 Thread Clive D.W. Feather
Rob Seaman said: But you did it yourself. Birth certificates list both time and place. Mine doesn't list time, nor do any of those of my family (who were born in two different countries, by the way, so this isn't just a UK thing). -- Clive D.W. Feather | If you lie to the compiler

Re: [LEAPSECS] No leapseconds on trains

2011-11-20 Thread Clive D.W. Feather
freight train in the USA is 6500 feet long (ie substantially over a mile) and travels at an average of around 20mph, or at most 30mph. So it takes around two minutes to pass a point. Timing that to a precision of a second seems a excessive. True. -- Clive D.W. Feather | If you

Re: [LEAPSECS] No leapseconds on trains

2011-11-20 Thread Clive D.W. Feather
cope with two trains requesting authority from the same track section in close succession, which is a problem on a line that divides trains! -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry

Re: [LEAPSECS] No leapseconds on trains

2011-11-18 Thread Clive D.W. Feather
reasons, and the reporting time from trackside module to interlocking runs on a basic cycle of several hundred milliseconds. So a 1 second error isn't going to faze anyone. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http

Re: [LEAPSECS] No leapseconds on trains

2011-11-17 Thread Clive D.W. Feather
in the same minute! I agree with Paul; it's self-inconsistent. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] What timekeeping system should the Terra Nova settlers use?

2011-10-05 Thread Clive D.W. Feather
Tony Finch said: Another way is to have TAI hours and minutes and seconds, with each day ending with a partial hour. This is the arrangement in Kim Stanley Robinson's Mars trilogy. And the Honor Harrington books, which is where I got it from. -- Clive D.W. Feather | If you lie

Re: [LEAPSECS] What timekeeping system should the Terra Nova settlers use?

2011-10-04 Thread Clive D.W. Feather
that moves its hands around to correct the time, or my wristwatch whose analogue stopwatch winds back when I reset it or forwards when I end a pause). -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry

Re: [LEAPSECS] Leap smear

2011-09-23 Thread Clive D.W. Feather
of the cesium 133 atom. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS

Re: [LEAPSECS] the abbreviation UTC

2011-08-18 Thread Clive D.W. Feather
this successfully yourself, or is this simply something that a friend claims he was told someone else told him that they know someone who did this? -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org

Re: [LEAPSECS] Metrologia on time

2011-08-04 Thread Clive D.W. Feather
on a per-minute basis. That should shake any complaints out in short order. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Get off my lawn!

2011-06-18 Thread Clive D.W. Feather
that GPS-UTC is an integer. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS

Re: [LEAPSECS] Far past and far future

2011-05-29 Thread Clive D.W. Feather
a leap second *every second*. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS

Re: [LEAPSECS] Far past and far future

2011-05-29 Thread Clive D.W. Feather
calculations are much the same, but the density is much greater. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Far past and far future

2011-05-27 Thread Clive D.W. Feather
steam at, say, an average height of 1km, that adds a tiny amount to the MoI - about 0.03% of the water's total, or under 0.2 part per million of the earth's total. If it all escapes into space, it reduces the MoI by 0.1% or so. [All quantities are in SI units without prefixes.] -- Clive D.W. Feather

Re: [LEAPSECS] Far past and far future

2011-05-26 Thread Clive D.W. Feather
appear to show. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS@leapsecond.com http

Re: [LEAPSECS] Far past and far future

2011-05-26 Thread Clive D.W. Feather
Thanks for this one. It was just the sort of material I was looking for. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] Far past and far future

2011-05-26 Thread Clive D.W. Feather
67302810034830 620 My ago64002840034800 Now58402890034740 That's a total loss of under 1%. Some of the source numbers are +/-3%, and no doubt there are rounding errors in my calculations. -- Clive D.W. Feather | If you lie to the compiler

Re: [LEAPSECS] Far past and far future

2011-05-26 Thread Clive D.W. Feather
Tony Finch said: Would the earth be slowing down so fast without the moon? There's some tidal coupling in the earth-sun system but isn't it much smaller? Solar tides are about 40% of lunar ones. But I don't know how that maps into tidal acceleration of orbits. -- Clive D.W. Feather

Re: [LEAPSECS] Far past and far future

2011-05-26 Thread Clive D.W. Feather
hours at 2100 My The latter, allegedly, is when increased solar radiation will boil the oceans and effectively stop tidal coupling. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer

[LEAPSECS] Far past and far future

2011-05-24 Thread Clive D.W. Feather
, and to stop me having to reconstruct the formula from first principles, does anyone have the relationship between length of day and distance to the moon? Thanks in advance. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http

Re: [LEAPSECS] Consensus building 2

2011-02-16 Thread Clive D.W. Feather
at a single Earth location (and I don't have a problem with that, so long as you're honest about it). -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] What's the point?

2011-02-15 Thread Clive D.W. Feather
. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS@leapsecond.com http

Re: [LEAPSECS] What's the point?

2011-02-15 Thread Clive D.W. Feather
radio-controlled clocks do not apply the DUT bits... If those clocks were being sold as GMT clock or UK legal time clock, then the seller would be in breach of the Sale of Goods Act. But I don't believe they are; they're just sold as self-synchronizing to MSF. -- Clive D.W. Feather

Re: [LEAPSECS] What's the point?

2011-02-11 Thread Clive D.W. Feather
millenium) to another? In other words, how is this any more complex than Russia deciding not to end DST this year? -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] What's the point?

2011-02-11 Thread Clive D.W. Feather
further west than that, and there are parts of Alaska where it's 0842 solar time at civil noon. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] one second tolerance

2011-02-09 Thread Clive D.W. Feather
the difference between UTC and BST. What makes you think that financial lawyers will think of it. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] one second tolerance

2011-02-09 Thread Clive D.W. Feather
, much hilarity ensues from time to time as one or the other turns up at the wrong time for a video conference. I can't wait to see what happens at the end of March. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http

Re: [LEAPSECS] one second tolerance

2011-02-09 Thread Clive D.W. Feather
, but leap seconds happen at 16:00 local time in California. And is there no out-of-hours trading? -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646

Re: [LEAPSECS] one second tolerance

2011-02-09 Thread Clive D.W. Feather
at 03:59:59. -- Clive D.W. Feather | If you lie to the compiler, Email: cl...@davros.org | it will get its revenge. Web: http://www.davros.org | - Henry Spencer Mobile: +44 7973 377646 ___ LEAPSECS mailing list LEAPSECS@leapsecond.com http

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