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

2011-12-08 Thread Rob Seaman
The best word is likely "epoch". Just as "place" represents some complex political/geographical area. A date is a range of times. The endpoints of that range are defined by all the rules we've touched on. Place and epoch are intertwined. It is the coherent definition of the underlying times

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, E

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

2011-12-07 Thread Warner Losh
On Dec 7, 2011, at 11:03 AM, Poul-Henning Kamp wrote: > In message , Rob Seaman writes: >> On Dec 7, 2011, at 8:57 AM, Poul-Henning Kamp wrote: > >>> My son was born on march 31 in California on Mount Diablo Hospital. >>> >>> But at the time it was April 1st in Denmark. >> >> Some might think

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

2011-12-07 Thread Poul-Henning Kamp
In message <4edfa244.4040...@comcast.net>, Gerard Ashton writes: >Although statements of birthdays are seldom accompanied by explicit >statements of the >time zone, the place of birth is usually available so the time zone can >be reconstructed. Yeah, so now you just need to know the _time of da

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

2011-12-07 Thread Poul-Henning Kamp
In message , Rob Seaman writes: >On Dec 7, 2011, at 8:57 AM, Poul-Henning Kamp wrote: >> My son was born on march 31 in California on Mount Diablo Hospital. >> >> But at the time it was April 1st in Denmark. > >Some might think April 1st comes disproportionately frequently in Denmark :-) > >Congr

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

2011-12-07 Thread Gerard Ashton
Although statements of birthdays are seldom accompanied by explicit statements of the time zone, the place of birth is usually available so the time zone can be reconstructed. As for what is recorded on a birth certificate, there is no telling what might be recorded; there are more than 14,000 k

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

2011-12-07 Thread Rob Seaman
On Dec 7, 2011, at 8:57 AM, Poul-Henning Kamp wrote: > I focused on the UT1, because UTC could _conceiveably_ have relevance, I'm glad you recognize that UTC could have relevance. Recognition is the first step. > whereas there is absolutely no way UT1 can come into play as a distinct > timesca

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

2011-12-07 Thread Dennis Ferguson
On 7 Dec, 2011, at 07:57 , Poul-Henning Kamp wrote: > Consequently, if anybody claims that UT1 as distinct from UTC has > any relevance for birthcertificates, I want to see the proof, because > the claim is entirely nonsensical and counter intuitive in every > way. Astrologers care, that's the de

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

2011-12-07 Thread Poul-Henning Kamp
In message , Rob Seaman writes: >On Dec 7, 2011, at 12:48 AM, Poul-Henning Kamp wrote: >Nice way to ignore the fact that you chose to excise the one key >term "UTC" from Mills' quote. I focused on the UT1, because UTC could _conceiveably_ have relevance, whereas there is absolutely no way UT1 can

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

2011-12-07 Thread Rob Seaman
On Dec 7, 2011, at 12:48 AM, Poul-Henning Kamp wrote: >> I wonder where he got the idea that death and birth certificates are UT1 too. > > Or for that matter, what difference it could possibly make ? Nice way to ignore the fact that you chose to excise the one key term "UTC" from Mills' quote.

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

2011-12-07 Thread Warner Losh
On Dec 7, 2011, at 4:13 AM, Ian Batten wrote: > > On 7 Dec 2011, at 0748, Poul-Henning Kamp wrote: > >> In message <26f22184-f7ba-4773-90c4-e480356f5...@noao.edu>, Rob Seaman >> writes: >> I wonder where he got the idea that death and birth certificates are UT1 too. >> >> Or for t

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

2011-12-07 Thread Poul-Henning Kamp
In message <5710b6b4-110e-4342-a593-32d3c7103...@batten.eu.org>, Ian Batten wri tes: >> Birthdays do not even get adjusted with/for timezones: You are >> born and die on civil time, > >Which of course takes us round in circles, because in some countries >civil time _is_ UT1. Well, Earth Rotataio

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

2011-12-07 Thread Ian Batten
On 7 Dec 2011, at 0748, Poul-Henning Kamp wrote: > In message <26f22184-f7ba-4773-90c4-e480356f5...@noao.edu>, Rob Seaman writes: > >>> I wonder where he got the idea that death and birth certificates are UT1 >>> too. > > Or for that matter, what difference it could possibly make ? > > Birthd

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

2011-12-06 Thread Poul-Henning Kamp
In message <26f22184-f7ba-4773-90c4-e480356f5...@noao.edu>, Rob Seaman writes: >> I wonder where he got the idea that death and birth certificates are UT1 too. Or for that matter, what difference it could possibly make ? Birthdays do not even get adjusted with/for timezones: You are born and di

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

2011-12-06 Thread Rob Seaman
On Dec 6, 2011, at 4:57 PM, Warner Losh wrote: > On Dec 6, 2011, at 3:55 PM, Poul-Henning Kamp wrote: > >> In message , Rob Seaman >> writes: >> >>> However, there is no escaping that synchronization with conventional human >>> activities requires [...] in case of birth and death certificates

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

2011-12-06 Thread Warner Losh
On Dec 6, 2011, at 3:55 PM, Poul-Henning Kamp wrote: > In message , Rob Seaman writes: > >> However, there is no escaping that synchronization with conventional >> human activities requires [...] in case of birth and death >> certificates UT1. > > Dave Mills has his opinions, and he are welcome

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

2011-12-06 Thread Poul-Henning Kamp
In message , Rob Seaman writes: >However, there is no escaping that synchronization with conventional >human activities requires [...] in case of birth and death >certificates UT1. Dave Mills has his opinions, and he are welcome to them, but they are not all based on facts from the recent decade,

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

2011-12-06 Thread Rob Seaman
I used a U.S. "black friday" discount to buy a copy of the 2nd edition of Dave Mills' "Computer Network Time Synchronization: The Network Time Protocol on Earth and in Space". I've had the library's copy of the 1st edition on my shelf for a long time, renewing as needed several times over. The