mikel@codas.ATT.UUCP (Mikel Manitius) (04/24/86)
Someone just pointed this out to me, look at the month of September
on this calander produced by "cal" for 1752 on a 3B2/400 SVR2:
1752
Jan Feb Mar
S M Tu W Th F S S M Tu W Th F S S M Tu W Th F S
1 2 3 4 1 1 2 3 4 5 6 7
5 6 7 8 9 10 11 2 3 4 5 6 7 8 8 9 10 11 12 13 14
12 13 14 15 16 17 18 9 10 11 12 13 14 15 15 16 17 18 19 20 21
19 20 21 22 23 24 25 16 17 18 19 20 21 22 22 23 24 25 26 27 28
26 27 28 29 30 31 23 24 25 26 27 28 29 29 30 31
Apr May Jun
S M Tu W Th F S S M Tu W Th F S S M Tu W Th F S
1 2 3 4 1 2 1 2 3 4 5 6
5 6 7 8 9 10 11 3 4 5 6 7 8 9 7 8 9 10 11 12 13
12 13 14 15 16 17 18 10 11 12 13 14 15 16 14 15 16 17 18 19 20
19 20 21 22 23 24 25 17 18 19 20 21 22 23 21 22 23 24 25 26 27
26 27 28 29 30 24 25 26 27 28 29 30 28 29 30
31
Jul Aug Sep
S M Tu W Th F S S M Tu W Th F S S M Tu W Th F S
1 2 3 4 1 1 2 14 15 16
5 6 7 8 9 10 11 2 3 4 5 6 7 8 17 18 19 20 21 22 23
12 13 14 15 16 17 18 9 10 11 12 13 14 15 24 25 26 27 28 29 30
19 20 21 22 23 24 25 16 17 18 19 20 21 22
26 27 28 29 30 31 23 24 25 26 27 28 29
30 31
Oct Nov Dec
S M Tu W Th F S S M Tu W Th F S S M Tu W Th F S
1 2 3 4 5 6 7 1 2 3 4 1 2
8 9 10 11 12 13 14 5 6 7 8 9 10 11 3 4 5 6 7 8 9
15 16 17 18 19 20 21 12 13 14 15 16 17 18 10 11 12 13 14 15 16
22 23 24 25 26 27 28 19 20 21 22 23 24 25 17 18 19 20 21 22 23
29 30 31 26 27 28 29 30 24 25 26 27 28 29 30
31
Can anyone else stimulate :-) this?
--
Mikel Manitius @ AT&T-IS Altamonte Springs, FL
...{ihnp4|akgua|bellcore|clyde|koura}!codas!mikelgemini@homxb.UUCP (Rick Richardson) (04/25/86)
I can hear it now - thousands of messages - "That's not a bug, that's
a feature!". See cal(1), then check with your history books.
Rick Richardson, PC Research, Inc. (201) 922-1134, (201) 834-1378 @ AT&T-CP
..!ihnp4!castor!{rer,pcrat!rer} <--Replies to here, not to homxb!gemini, please.henry@utzoo.UUCP (Henry Spencer) (04/27/86)
> Someone just pointed this out to me, look at the month of September > on this calander produced by "cal" for 1752 on a 3B2/400 SVR2: ... This is correct behavior and a correct calendar, which is why the manual page (at least, the older version of it) calls attention to that month. In September 1752, England and its colonies converted to the Gregorian calendar. An adjustment was required to bring them into step with the Catholic nations, which had converted rather earlier. -- Support the International League For The Derision Henry Spencer @ U of Toronto Zoology Of User-Friendliness! {allegra,ihnp4,decvax,pyramid}!utzoo!henry
gwyn@brl-smoke (04/28/86)
In article <500@codas.ATT.UUCP> mikel@codas.ATT.UUCP (Mikel Manitius) writes: >Someone just pointed this out to me, look at the month of September >on this calander produced by "cal" for 1752 on a 3B2/400 SVR2: ^e I guess you don't read the manual; this is suggested on the manual page. It is NOT a bug.
levy@ttrdc.UUCP (Daniel R. Levy) (04/30/86)
In article <13490@ucbvax.BERKELEY.EDU>, weemba@brahms.BERKELEY.EDU (Matthew P. Wiener) writes: > >Does cal(1) work correctly in other countries, by the way? For example, >Sweden's approach was to cancel leap year for over four decades in the >late 17th century. > >ucbvax!brahms!weemba Matthew P Wiener/UCB Math Dept/Berkeley CA 94720 I kind of doubt it, since the manual says the calendar used is that for England and its (her) colonies. -- ------------------------------- Disclaimer: The views contained herein are | dan levy | yvel nad | my own and are not at all those of my em- | an engihacker @ | ployer or the administrator of any computer | at&t computer systems division | upon which I may hack. | skokie, illinois | -------------------------------- Path: ..!{akgua,homxb,ihnp4,ltuxa,mvuxa, vax135}!ttrdc!levy
jjm@pecnos.UUCP (Jim Moseman) (04/30/86)
Only 11 days were deleted at that time. Countries which adopted the Gregorian calendar later may have had to delete more (the difference is three days per 400 years). -- Jim Moseman @ CONCURRENT Computer Corporation, Tinton Falls, N.J. ...!vax135!petsd!jjm
goudreau@dg_rtp.UUCP (Bob Goudreau) (04/30/86)
In article <17634@rochester.ARPA> ken@rochester.UUCP (Ipse dixit) writes: >In article <500@codas.ATT.UUCP> mikel@codas.ATT.UUCP (Mikel Manitius) writes: >>Someone just pointed this out to me, look at the month of September >>on this calander produced by "cal" for 1752 on a 3B2/400 SVR2: >> Jul Aug Sep >> S M Tu W Th F S S M Tu W Th F S S M Tu W Th F S >> 1 2 3 4 1 1 2 14 15 16 >> 5 6 7 8 9 10 11 2 3 4 5 6 7 8 17 18 19 20 21 22 23 >>12 13 14 15 16 17 18 9 10 11 12 13 14 15 24 25 26 27 28 29 30 > >It is not a bug. September 1752 was the month leap centuries were added >to the Gregorian calendar. By edict 12 days were deleted from the month >to make up for the discrepancy the calendar had accumulated over the >centuries. This prompted cries of "give us back our 12 days". This was >only in England. Many other European countries did not adjust until >later, in fact Russia not until early this century. I remember Asimov >has an entertaining discussion of this in one of his books. Actually, most of Western Europe had already made the conversion centuries before Great Britain and its colonies did in 1752. The new calendar is named Gregorian, after Pope Gregory, who ordered the first change since the time of Julius Caesar (whence came "Julian"). Since the Pope was not much appreciated in Britain at the time, it took a while to convince the King and Parliament to adhere to the new standard. Bob Goudreau
markb@sdcrdcf.UUCP (Mark Biggar) (05/07/86)
First off it's 11 days not 12. The reason they had the "give us back our
11 days" riots, was that landlords were trying to charge a full months rent
instead of pro-rating it. It took an Act of Parliament to get the
landlords to only charge for 2/3 of a month.
Mark Biggar
{allegra,burdvax,cbosgd,hplabs,ihnp4,akgua,sdcsvax}!sdcrdcf!markbgam@amdahl.UUCP (05/08/86)
In article <853@ttrdc.UUCP> levy@ttrdc.UUCP (Daniel R. Levy) writes: > In article <13490@ucbvax.BERKELEY.EDU>, weemba@brahms.BERKELEY.EDU (Matthew P. Wiener) writes: > > > >Does cal(1) work correctly in other countries, by the way? For example, > > I kind of doubt it, since the manual says the calendar used is that for > England and its (her) colonies. I'm kinda amazed that all these questions about the date(1) command have come up! When I told someone else about all this going on here in net.bugs (!), they asked me, "Was this posted on April 1st?" Well, was that question about Sept. 1752 for real or an April Fool's joke? I hope you guys realise that the Unix manual pages *define* what features/abilities and sometimes defects each component (command, system call, subroutine, etc) has, along with other supplied documentation. I thought this was obvious, but then this is my job! I work in UTS Product Support and I fix bugs and decide what the product component *should* do, based on what the documentation says (and sometimes I even have to change the documentation!). In any case, I always make sure that the manual page is correct, clear, and true. Because I consider it the definition of the component. (the ultimate authority is the System V Interface Definition, of course). So, either we have seen a lot of cute jokes, or some people don't realise how helpful it might be to real the fruitful manual! -- Gordon A. Moffett ...!{ihnp4,seismo,hplabs}!amdahl!gam I speed up to run over unicorns. -- [ This does not represent Amdahl Corporation ]