Re: The real problem with leap seconds

2006-01-18 Thread M. Warner Losh
In message: <[EMAIL PROTECTED]> Mark Calabretta <[EMAIL PROTECTED]> writes: : On Wed 2006/01/18 08:17:54 -, Francois Meyer wrote : in a message to: LEAPSECS@ROM.USNO.NAVY.MIL : : >Maybe it should be, but this is far from being : >obvious from its current definition. : : I agre

Indiana time zone change from Department of Transportation

2006-01-18 Thread Neal McBurnett
This should provide some more grist for understanding the reality of civil time. This happens pretty often somewhere in the world. A DOT final ruling on Indiana came out today, affecting time zones starting April 2, 2006: http://www.dot.gov/affairs/dot0406.htm > Under the Uniform Time Act of 19

Re: The real problem with leap seconds

2006-01-18 Thread Mark Calabretta
On Wed 2006/01/18 08:17:54 -, Francois Meyer wrote in a message to: LEAPSECS@ROM.USNO.NAVY.MIL >Maybe it should be, but this is far from being >obvious from its current definition. I agree that the current definitions leave a lot to be desired in terms of clarity and rigour - an unchari

Internet-Draft on UTC-SLS

2006-01-18 Thread Markus Kuhn
A new Internet-Draft with implementation guidelines on how to handle UTC leap seconds in Internet protocols was posted today on the IETF web site: "Coordinated Universal Time with Smoothed Leap Seconds (UTC-SLS)", Markus Kuhn, 18-Jan-06. (36752 bytes) http://www.ietf.org/internet-drafts/dra

Re: The real problem with leap seconds

2006-01-18 Thread Michael Deckers
On 2006-01-18, Steve Allen wrote: > Now I am confused. > > By my reading of the documents, ITU-R did not define DTAI until the > most recent revision of TF.460 in 2002. DUT1 had been defined since > very early on. You are right, the name DTAI has apparently been introduced in 2002. It

Re: The real problem with leap seconds

2006-01-18 Thread M. Warner Losh
In message: <[EMAIL PROTECTED]> Francois Meyer <[EMAIL PROTECTED]> writes: : On Mon, 16 Jan 2006, Mark Calabretta wrote: : : > On Fri 2006/01/13 11:17:52 -, Michael Deckers wrote : > in a message to: LEAPSECS@ROM.USNO.NAVY.MIL : > : > > I must get TAI, up to an integration constan

Re: The real problem with leap seconds

2006-01-18 Thread Ed Davies
Poul-Henning Kamp wrote: In message <[EMAIL PROTECTED]>, Francois Meyer writes: On Mon, 16 Jan 2006, Mark Calabretta wrote: 1. UTC and TAI share the same rate, the same origin, the same second. And therefore : UTC - TAI = 0 This is wrong, plain and simple wrong. Well, if

Re: The real problem with leap seconds

2006-01-18 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, Francois Meyer writes: >On Mon, 16 Jan 2006, Mark Calabretta wrote: >1. UTC and TAI share the same rate, the same > origin, the same second. And therefore : > >UTC - TAI = 0 This is wrong, plain and simple wrong. Please don't come back until you ha

Re: The real problem with leap seconds

2006-01-18 Thread Francois Meyer
On Mon, 16 Jan 2006, Mark Calabretta wrote: > On Fri 2006/01/13 11:17:52 -, Michael Deckers wrote > in a message to: LEAPSECS@ROM.USNO.NAVY.MIL > > > I must get TAI, up to an integration constant. This is correct. > > The integral of d( UTC ) is TAI (up to an integration constant), > > b