1. Calendar ?
Given a date:, ie:
July 29, 2003...
is there a simple way to calculate the day of the week: ie:
...it's Tuesday !
( @#$% stupid MC146818 )
Wolf
2. Re: Calendar ?
Wolf wrote:
> Given a date:, ie:
> July 29, 2003...
> is there a simple way to calculate the day of the week: ie:
> ...it's Tuesday !
Junko wrote a program for this a long time ago.
It's in the Archive:
http://www.rapideuphoria.com/daybdate.zip
Regards,
Rob Craig
Rapid Deployment Software
http://www.RapidEuphoria.com
3. Re: Calendar ?
This has definately been done. Someone should give you the solution soon.
I don't have it at hand right now though. Elliott, Robsz, Bensler, jbrown,
one of you care to steal it form a copy of my irc2html.exe
Remember it creates that index.html page. In doing so it computes the day
of the week based on the date.
Lucius L. Hilley III
----- Original Message -----
From: "Wolf" <wolfritz at KING.IGS.NET>
To: "EUforum" <EUforum at topica.com>
Sent: Tuesday, July 29, 2003 01:16 PM
Subject: Calendar ?
>
>
> Given a date:, ie:
> July 29, 2003...
> is there a simple way to calculate the day of the week: ie:
> ...it's Tuesday !
>
> ( @#$% stupid MC146818 )
> Wolf
>
> --^----------------------------------------------------------------
> This email was sent to: l3euphoria at bellsouth.net
>
>
> TOPICA - Start your own email discussion group. FREE!
>
>
4. Re: Calendar ?
> Given a date:, ie:
> July 29, 2003...
> is there a simple way to calculate the day of the week: ie:
> ...it's Tuesday !
>
> ( @#$% stupid MC146818 )
Here's some interesting, fun, and useful links:
http://www.terra.es/personal2/grimmer/
http://www.fos.su.se/physical/stefan/perl/scripts/date_and_time/zeller.date.
pl
http://quasar.as.utexas.edu/BillInfo/doomsday.html
http://www.cs.princeton.edu/~rpeterso/date_trick.html
http://www.sislands.com/jscript/week3/dayofwk.htm
http://rudy.ca/doomsday.html
http://jonathan.rawle.org/hyperpedia/daycal.htm
Some of them duplicate the "Doomsday" calculation algorithm. Ah well!
Let me know which one of the above is best... :)
Thanks,
ck
5. Re: Calendar ?
- Posted by rolf at rschr.de
Jul 29, 2003
This is a multi-part message in MIME format.
--------------59C3BA08093E8B419DE677BA
Wolf wrote:
>
> Given a date:, ie:
> July 29, 2003...
> is there a simple way to calculate the day of the week: ie:
> ...it's Tuesday !
>
Hi Wolf,
I attached the file 'datetime.zip', it contains 'datetime.e' which has
several date conversion functions and also mum_of_weekday(). Look into
the test program 'datetime.ex'.
Have a nice day, Rolf
--------------59C3BA08093E8B419DE677BA
Content-Type: application/x-zip-compressed;
name="DATETIME.zip"
6. Re: Calendar ?
> Wolf wrote:
> > Given a date:, ie:
> > July 29, 2003...
> > is there a simple way to calculate the day of the week: ie:
> > ...it's Tuesday !
>
> Junko wrote a program for this a long time ago.
> It's in the Archive:
>
> http://www.rapideuphoria.com/daybdate.zip
I suspected there was probably some code already written. Next time I'll
check the library first. ;)
7. Re: Calendar ?
OK, thanks to all!
Now just gotta convert one of these Doomsday/Gregorian algo's to 8 bit
6803/6502'ish code,
.. ignoring the Y2K100 bug, of course 
Wolf
8. Re: Calendar ?
On Tue, 29 Jul 2003 13:16:47 -0400, Wolf <wolfritz at KING.IGS.NET>
wrote:
>Given a date:, ie:
>July 29, 2003...
>is there a simple way to calculate the day of the week: ie:
> ...it's Tuesday !
>
Try this, though I have suspicions it won't work for 2000 and before:
---- Tomohiko Sakamoto=20
constant t=3D{ 0, 3, 2, 5, 0, 3, 5, 1, 4, 6, 2, 4 }
function dow(integer d, integer m, integer y)
integer k
y -=3D m < 3
k=3Dfloor(y/100)
return remainder(y+floor((y+k)/4)-k+t[m]+d,7)
end function
Pete
9. Re: Calendar ?
Wolf wrote:
> Given a date:, ie:
> July 29, 2003...
> is there a simple way to calculate the day of the week: ie:
> ...it's Tuesday !
Junko wrote a program for this a long time ago.
It's in the Archive:
http://www.rapideuphoria.com/daybdate.zip
I suspected there was probably some code already written. Next time I'll
check the library first. ;)
--
Regards,
Rob Craig
Rapid Deployment Software
http://www.RapidEuphoria.com
10. Re: Calendar ?
- Posted by gertie at visionsix.com
Jul 29, 2003
On 29 Jul 2003, at 13:16, Wolf wrote:
> ( @#$% stupid MC146818 )
Try a DS12885 ?
Kat
11. Re: Calendar ?
- Posted by gertie at visionsix.com
Jul 29, 2003
On 29 Jul 2003, at 14:35, Wolf wrote:
>
>
> OK, thanks to all!
> Now just gotta convert one of these Doomsday/Gregorian algo's to 8 bit
> 6803/6502'ish code, .. ignoring the Y2K100 bug, of course
Since there are C64 programs that read and use msdos-formatted
harddrives, i imagine they handle the dates that M$/dos/windoze stamped
them with. Check them out. The C64 is 6510, 6502 core.
Kat
12. Re: Calendar ?
Wolf wrote:
> Given a date:, ie:
> July 29, 2003...
> is there a simple way to calculate the day of the week: ie:
> ...it's Tuesday !
Junko Miura's day of week function is probably the way to go if all you
want is that one function. (I searched on 'Junko week' in the archive
and it came out top.)
For overkill, there's my library (Rolf Schroeder already posted his
datetime.e, so perhaps me posting mine is redundant; But I can't resist
a plug :) ) and docs at http://www.cyreksoft.yorks.com/euphoria/
For those griping about the fact a function returns a day of week for an
invalid date (like Feb. 30th) there's a validDayOfWeek() function that
returns -1 when the date is invalid.
Carl
--
[ Carl R White == aka () = The Domain of Cyrek = ]
[ Cyrek the Illogical /\ www.cyreksoft.yorks.com ]
