1. What'a julian day?
- Posted by Ralf Nieuwenhuijsen <nieuwen at POP.XS4ALL.NL> Jun 25, 1997
- 678 views
I saw a program to calculate the julian date on the ftp site, but what is it? Will someone please tell me ? Ralf Nieuwenhuijsen nieuwen at xs4all.nl
2. Re: What'a julian day?
- Posted by David Alan Gay <moggie at INTERLOG.COM> Jun 25, 1997
- 697 views
> I saw a program to calculate the julian date on the ftp site, but > what is it? > > Will someone please tell me ? > The Julian date is a 5 digit format where the first two digits is the year, and the next 3 are the number of days into the current year. For example, February 2nd, 1997 would read 97033. Euphoria returns the number of days into the year as part of the sequence returned by date(). I believe it is element number eight. Regards David Gay http://www.interlog.com/~moggie/Euphoria "A Beginner's Guide To Euphoria"
3. Re: What'a julian day?
- Posted by Ralf Nieuwenhuijsen <nieuwen at POP.XS4ALL.NL> Jun 25, 1997
- 670 views
> > I saw a program to calculate the julian date on the ftp site, but > > what is it? > > > > Will someone please tell me ? > > > The Julian date is a 5 digit format where the first two digits is the year, > and the next 3 are the number of days into the current year. > > For example, February 2nd, 1997 would read 97033. > > Euphoria returns the number of days into the year as part of the sequence > returned by date(). I believe it is element number eight. There are max 365 days in a year, using 3 digits is very unnessasery, and what about the year 2000-problem? I guess it somesort of standard... what about adding 365 if the year is 2000 or beyond? Well, thankX Ralf Nieuwenhuijsen nieuwen at xs4all.nl
4. Re: What'a julian day?
- Posted by Larry D Poos <ldpoos at JUNO.COM> Jun 25, 1997
- 669 views
On Wed, 25 Jun 1997 11:28:04 +0000 Ralf ieuwenhuijsen <nieuwen at magigimmix.xs4all.nl> writes: What'a julian day? >I saw a program to calculate the julian date on the ftp site, but >what is it? > >Will someone please tell me ? I saw Mr. Gay's reply to your message in this e-mail download. It is correct as far as "common" use of the term Jullian Date goes but it is the answer for "Julian Notation" which is good for 10 years in five digit form. It is useful for calculation of the number of days between two dates fairly close together. "Julian Period Date" is the system used by astronomers for marking events. The system was devised in 1582 by Joseph Scaliger and named after his father. The first day of this calendar system starts at noon on Jan. 1, 4713 B. C. (Julian) FYI: a) Noon on Dec. 31, 1975 starts JD 2,442,778. b) The Geogian Calendar starts on 15 Oct 1582 with the day prior being 4 Oct 1582 by the Julian Calendar. c) The last country to switch from the Julian calendar to the Georgian was Russia in 1918. d) A year is actually 365dy, 5hr, 48m, 47.00000000095s long. Thus the reason for leap years. It was converting an application to Euphoria that calculates the JD from a given calendar date (or a Georgian calendar date from a JD) that resulted in my asking about the math functions for floor() and remainder() in Euphoria. The binary conversion anomaly is giving me fits when converting to calendar dates for JDN's that = 12/31/xx and JDN's in leap years after 2/29. Larry D. Poos -[USMC (Retar{bks}{bks}ired) Havelock, NC]- - Programming and System Consultant, LTAD Enterprises - e-mail: ldpoos at juno.com Fido: 1:3629/101.6
5. Re: What'a julian day?
- Posted by d a edmunds <dae at PACLINK.COM> Jun 26, 1997
- 676 views
>a given calendar date (or a Georgian calendar date from a JD) that Point of order: It is not a 'Georgian' calendar -- it is a "Gregorian" calendar, named after Pope Gregory who put it in place. -- keep up the good work! --dae at paclink.com--