... interchange ... I apologize. As a newbie, I came away with the wrong impression of the ISO 8601 (I didn't realize it was set forth _strictly_ for...
1139
John Steele
johnmsteele
Jan 1, 2005 10:01 pm
Actually, this group started an offshoot group, wwdates, specifically for such discussions, and Tex has been trying to get such discussions discussed there....
I think the applications you list all use TAI or a related scale, and regard UTC as something they compute for "civilians." We've had a bit of a lull on leap...
1142
Tex Texin
textexin
Jan 4, 2005 2:31 am
Hi, There was a news item the other day that due to the recent earthquake that caused the tsunamis, that shift in the plates was large enough to cause a slight...
1143
hjwoudenberg@...
Jan 4, 2005 3:18 am
In a message dated 1/3/2005 8:32:24 PM Central Standard Time, tex@... writes: As for Herman's question, I wouldn't use a formula like that. There are...
1144
Tex Texin
textexin
Jan 4, 2005 3:44 am
Leap seconds don't go back 100 years. http://hpiers.obspm.fr/eoppc/bul/bulc/TimeSteps.history I think you are considering hypotheticals. Reality is there are...
1145
hjwoudenberg@...
Jan 4, 2005 7:35 am
In a message dated 1/3/2005 9:46:27 PM Central Standard Time, tex@... writes: Leap seconds don't go back 100 years. ...
1146
Tex Texin
textexin
Jan 4, 2005 8:21 am
... I am not sure what kind of op. system indexes you are refering to, but you can design a cheap indexing scheme, quickly, esp. when you are talking about...
1147
johnmsteele
Jan 4, 2005 2:02 pm
... very few (~32). ... There are actually only 22 using the present schema. From 1958-01-01 to 1972-01-01, a "rubber clock" was used plus "mini-leap-seconds,"...
1148
Fred Bone
fjpbone
Jan 4, 2005 9:11 pm
... What's that, then? 1st of March? Oh, you must mean 2005-01-03T20:32:34-0600. ;-> (Happy New Year to all) .. F...
1149
hjwoudenberg@...
Jan 5, 2005 1:56 pm
If the result of the lookup is made global, retained between date calls. If before doing a lookup the global value is checked. Since studies claim that 80% of...
1150
Tex Texin
textexin
Jan 5, 2005 8:35 pm
While I am allergic to the use of globals, I think the gist of your point is that with cacheing you can accelerate execution, which is generally true. tex If...
1151
hjwoudenberg@...
Jan 6, 2005 8:42 pm
In a message dated 1/5/2005 2:37:52 PM Central Standard Time, tex@... writes: While I am allergic to the use of globals, I think the gist of your...
1152
hjwoudenberg@...
Jan 10, 2005 6:23 am
The Gregorian Calendar leap year rules. If devisable by 4 Not if divisible by 100 If divisible by 400 Not if divisible by 4000 Everywhere I see the formulas...
1153
Tex Texin
textexin
Jan 10, 2005 7:10 am
Is Jilian day a typo or a real name for a day? As for your question, there is a good answer for you here: ...
1154
hjwoudenberg@...
Jan 10, 2005 8:25 am
In a message dated 1/10/2005 1:10:40 AM Central Standard Time, tex@... writes: As for your question, there is a good answer for you here: ...
1155
John Steele
johnmsteele
Jan 10, 2005 1:26 pm
There is no 4000 year rule. It was not part of Pope Gregory's decree. It has been proposed but it has never been agreed on by any body or standard...
1156
hjwoudenberg@...
Jan 11, 2005 6:48 am
Appreciate the info both of you gave In a message dated 1/10/2005 7:27:03 AM Central Standard Time, johnmsteele@... writes: There is no 4000 year rule....
1157
Pete Forman
pete_forman
Jan 11, 2005 11:49 am
... From the Calendar FAQ: http://www.tondering.dk/claus/cal/node3.html#SECTION00322000000000000000 ... ...
1158
hjwoudenberg@...
Jan 12, 2005 3:21 am
If I correctly understand, my conclusions is that after 8000 years calendars becomes fuzzy. Theoretically in the future a 400 year leap year should be ...
1159
John Steele
johnmsteele
Jan 12, 2005 4:34 am
Yes, as you say, it gets fuzzy. Unlike leap seconds, some leap days will need to be removed. That can either be done by "cancelling" selected leap days, but...
1160
hjwoudenberg@...
Jan 12, 2005 5:22 am
In a message dated 1/11/2005 10:39:26 P.M. Central Standard Time, johnmsteele@... writes: I personally favor minimal generalization. Retain existing...
1161
John Hynes
johndhynes
Jan 12, 2005 9:09 am
I don't know how it favors the northern hemisphere, since the northern vernal equinox is also the southern autumnal equinox. Pope Gregory's decree is called...
1162
John Steele
johnmsteele
Jan 12, 2005 1:28 pm
You have succinctly expressed the opposing point of view. I doubt that either view is 100% right or wrong and ultimately become a matter of opinion. A few...
1163
johnmsteele
Jan 13, 2005 5:49 pm
I finally found this link in my file. If you want "way too much info" on the variation of the tropical year length over time, this paper is the place to start....
1164
John Hynes
johndhynes
Jan 13, 2005 9:25 pm
The differences were well within their capability to distinguish with sufficient accuracy, and had, in fact, been known for a long time. However, the so-called...
1165
John Hynes
johndhynes
Jan 13, 2005 9:26 pm
The differences were well within their capability to distinguish with sufficient accuracy, and had, in fact, been known for a long time. However, the so-called...
1166
John Hynes
johndhynes
Jan 13, 2005 9:26 pm
The differences were well within their capability to distinguish with sufficient accuracy, and had, in fact, been known for a long time. However, the so-called...
1167
John Hynes
johndhynes
Jan 13, 2005 9:27 pm
The differences were well within their capability to distinguish with sufficient accuracy, and had, in fact, been known for a long time. However, the so-called...
