The perpetual calendar
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From: Mike Barnes on 21 Feb 2010 17:59 Ant�nio Marques <entonio(a)gmail.com>: >On Feb 21, 1:09�am, Andrew Usher <k_over_hb...(a)yahoo.com> wrote: >> Mike Barnes wrote: >> > Adam Funk <a24...(a)ducksburg.com>: >> > >From man 5 crontab: >> >> > > � When specifying day of week, both day 0 and day 7 will be >> > > � considered Sunday. �BSD and AT&T seem to disagree about this. >> >> > But they presumably agree that day one is Monday. >> >> But 0 is the start of computer indexing - at least in real programs. 0 >> = Sunday. > >Ahem. In low level, pointer oriented languages such as C and its >family. And those who chose to imitate it. But not in the first language I used when working for a living (COBOL). -- Mike Barnes Cheshire, England
From: Dr J R Stockton on 21 Feb 2010 16:38 In sci.astro message <f56acf3e-cd6e-4dbe-a3d5-f442b0787edc(a)f8g2000yqn.go oglegroups.com>, Sat, 20 Feb 2010 17:05:10, Andrew Usher <k_over_hbarc(a)yahoo.com> posted: >Prai Jei wrote: >> Andrew Usher set the following eddies spiralling through the space-time >> continuum: >> >> > 3. That the leap year rule be changed to have a leap year occur every >> > fourth save that it be delayed when the leap year would start on a >> > Thursday, and that this gives 7 leap years in every 29, which is near >> > enough. >> >> 7/29 amounts to 0.2413 of an extra day on average. We're looking for 0.2422. >> The Gregorian calendar says 97/400 (0.2425) which is more accurate, the >> Revised Julian Calendar says 218/900 (0.24222 recurring) [1] which is more >> accurate again. > >7/29 IS close enough when you consider the slowing of Earth's >rotation. However, it's wrong - the leap year procedure I wrote (which >is necessary) does not give 7 in 29 years, since that isn't a whole >number of weeks. From <URL:http://www.merlyn.demon.co.uk/leapyear.htm> :- Personally, if I were Pope, I'd change (with effect from the year 2048) to having a Leap Year every time that the Year was divisible by 4 but not by 128 - this gives an average year of 365.2421875 days - as proposed by M.B. Cotsworth (1859-1943); see also <URL:http://www.merlyn.demon.co.uk/moredate.htm#RLY> in my Date Miscellany II. That calendar, including weeks, repeats every 896 years. The Easter Rules would need to be changed; but it would be convenient to fix Easter Sunday as yyyy-W15-7, which puts it in the range currently designated yyyy-04-11 to yyyy-04-18. -- (c) John Stockton, nr London, UK. ?@merlyn.demon.co.uk Turnpike v6.05. Web <URL:http://www.merlyn.demon.co.uk/> - w. FAQish topics, links, acronyms PAS EXE etc : <URL:http://www.merlyn.demon.co.uk/programs/> - see 00index.htm Dates - miscdate.htm estrdate.htm js-dates.htm pas-time.htm critdate.htm etc.
From: Androcles on 21 Feb 2010 18:40 "Ant�nio Marques" <entonio(a)gmail.com> wrote in message news:b77774aa-cbd3-4d01-a891-4ce3ed966ab6(a)l26g2000yqd.googlegroups.com... On Feb 21, 12:40 am, "Androcles" <Headmas...(a)Hogwarts.physics_u> wrote: > "Adam Funk" <a24...(a)ducksburg.com> wrote in message > > news:47t557xq46.ln2(a)news.ducksburg.com... > > > > > On 2010-02-20, Brian M. Scott wrote: > > >> On Sat, 20 Feb 2010 08:49:14 -0000, Androcles > >><Headmas...(a)Hogwarts.physics_u> wrote in > >><news:mmNfn.9989$X_6.9098(a)newsfe22.ams2> in > >> sci.math,sci.physics,sci.astro,sci.lang: > > >>> "Brian M. Scott" <b.sc...(a)csuohio.edu> wrote in message > >>>news:1s2uq5glt3lgu$.1m746rj1287gz$.dlg(a)40tude.net... > > >>>> Don't be ridiculous: it's merely a convention. For many of > >>>> us Monday is unquestionably the first day of the week. > > >>> Which day is Mittwoch > > >> The middle of the five-day work week. > > > It should be renamed Wotanstag. > > Odin's, Wotan's, Woden's, Weden's, Wednesday, it's > all the same in the Germanic languages. Now try it in the > Latin languages... such as Portugooses. > Domingo segunda-feira ter�a-feira quarta-feira quinta-feira sexta-feira > s�bado > and Italian > Domenica luned� marted� mercoled� gioved� venerd� sabato > > Translation byhttp://uk.babelfish.yahoo.com/translate_txt Iinm, all the romance languages have week names derived from the roman gods. Pt is the exception, having '2nd-6th fair' for Mon-Fry. There, monday is 2nd-fair, not 1st, though our calendars usually begin on monday. The roman-gods-names do exist in galician, where they are geographically dominant. Luns, martes, m�rcores, xoves, venres. Presumbaly pt would have luns, martes, m�rcores/m�rcoles?, joves, vernes/vendres/venres? had it developed from a different region. ================================================= The planets and their days: English German French Italian Spanish Sun Sunday Sonntag Dimanche Domenica Domingo Moon Monday Montag Lundi Lunedi Lunes Mercury Thursday Donnerstag Mercredi Mercoledi Venus Friday Freitag Vendredi Venerdi Viernes (Earth) Mars Tuesday Dienstag Mardi Martedi Martes Jupiter Wednesday Mittwoch Jeudi Giovedi Jueves Saturn Saturday Samstag Samedi Sabato S�bado (Uranus) unseen by the naked eye or unnoticed as a fixed star (Neptune) unseen by the naked eye or unnoticed as a fixed star (Pluto) unseen by the naked eye The order in which they are arranged is not the same. Observing the planets as gods goes back to prehistory and are the basis of the seven day week. The one god, Ra (sun) was an Egyptian idea that became Hebrew.
From: Brian M. Scott on 21 Feb 2010 19:16 On Sun, 21 Feb 2010 23:40:53 -0000, Androcles <Headmaster(a)Hogwarts.physics_u> wrote in <news:Xxjgn.49780$tJ.39213(a)newsfe28.ams2> in sci.math,sci.physics,sci.astro,sci.lang: [...] > The planets and their days: > English German French Italian Spanish > Sun Sunday Sonntag Dimanche Domenica Domingo Only the English and German names refer to the sun; the three Romance names are from the ecclesiastical calendar and refer to the Lord. > Moon Monday Montag Lundi Lunedi Lunes > Mercury Thursday Donnerstag Mercredi Mercoledi > Venus Friday Freitag Vendredi Venerdi Viernes > (Earth) > Mars Tuesday Dienstag Mardi Martedi Martes > Jupiter Wednesday Mittwoch Jeudi Giovedi Jueves Obviously <Mittwoch> has nothing to do with the planet. > Saturn Saturday Samstag Samedi Sabato Sábado The only one of these that refers to the planet is English <Saturday>; the others all derive from Greek <Σάββατον>, from Hebrew. (The German and French add a <-day> element.) [...] > The order in which they are arranged is not the same. > Observing the planets as gods goes back to prehistory > and are the basis of the seven day week. This last is not certain. [...]
From: Robert Bannister on 21 Feb 2010 20:01
Yusuf B Gursey wrote: > On Feb 19, 11:25 am, Mike Barnes <mikebar...(a)bluebottle.com> wrote: >> John Atkinson <johna...(a)bigpond.com>: >> >>> Halmyre wrote: >>>> I just wish they'd settle on a date for Easter and be done with it. >>> But, the whole point of Easter is that it has a full moon! >> A full-*ish* moon, actually. The definitions of the equinox and full >> moon used when determining Easter are rather different from the real >> definitions used by astronomers, which would actually give rise to >> different (perhaps several weeks different) Easter dates depending on >> one's longitude. >> >> But I thought that for most people the whole point of Easter is that >> they get time off work. >> > > not in the US, at least not in my state. Are you saying that Easter is not a holiday in your state? -- Rob Bannister |