Re: Mechanism to provide tai-utc.dat locally

2006-12-29 Thread Tony Finch
On Fri, 29 Dec 2006, Rob Seaman wrote: Folks keep fretting here about retrieving lists of leap seconds autonomously, although no specific use case is proffered about why one needs to use UTC to measure intervals across various and sundry leap second events. You need to do so in order to

Re: Mechanism to provide tai-utc.dat locally

2006-12-29 Thread Steve Allen
On Fri 2006-12-29T07:43:56 +, Tony Finch hath writ: Astronomers still count Julian years (365.25 days instead of exact years) when dealing with long MJD intervals. Such intervals are almost always expressed in the IAU's time scale of Terrestrial Time (TT) which is taken to be a more

Re: Mechanism to provide tai-utc.dat locally

2006-12-29 Thread Steve Allen
On Thu 2006-12-28T18:31:43 -0700, M. Warner Losh hath writ: Let's turn the question around. What would the harm be if |DUT1| were 1.1s? 1.5s? 2.0s? Contrast this with the harm and difficulty that the current 6 month scheduling window affords. I have previously indicated that I believe this

Re: Mechanism to provide tai-utc.dat locally

2006-12-29 Thread Rob Seaman
Tony Finch wrote: You need to do so in order to implement an accurate clock, since the clock produces interval time and you need a way to convert its output to time of day. As Steve Allen has pointed out, it is in the nature of a clock to be reset on occasion. What is NTP but a mechanism for

Re: Mechanism to provide tai-utc.dat locally

2006-12-29 Thread John Cowan
Rob Seaman scripsit: Seems like? Chances are? Pick some other random technical issue - say, automobile airbags, standardized educational testing, the lead content of pigment in children's crayons, and so forth and so on. Would seems like and chances are be phrases you would want to see in

Re: Mechanism to provide tai-utc.dat locally

2006-12-29 Thread Michael Deckers
On 2006-12-09, Clive D.W. Feather challenged, and I couldn't resist: For something more challenging, try the 8 Bank Holidays in England: ... (8) Second weekday after 24th December. second weekday after 24th December in Gregorian year( Y ) = Gregorian calendar( Y, December, 26

RFC 2445 and unplanned pregnancies

2006-12-29 Thread Steve Allen
On Fri 2006-12-29T09:25:33 +, Clive D.W. Feather hath writ: Why is this challenging? It's whichever of 23 to 29 November (inclusive) is a Friday. Yes, and without bothering to patch a version of the old Tcl/Tk ical well enough to run on what I have here, I believe that is pretty much the