Algorithm for sunrise and sunset?

Hello all,

I'm sorry if this question is out of place here, but I have no idea
where to look.

I'm looking for a way to calculate the time of sunrise and sunset
given a UTC date & time and a set of coordinates.

I don't care about a specific programming language, as long as I can
figure out the formulae behind the thing.

Thanks in advance,
--
Martijn @ Coppoolse .com

"Practical Astronomy with your Calculator" by Duffett-Smith is probably the
book you're looking for. It's the simplest approach of many books on the
subject (which is called "spherical astronomy" or "practical astronomy").

"M?ht?n" wrote in message
om...
Hello all,

I'm sorry if this question is out of place here, but I have no idea
where to look.

I'm looking for a way to calculate the time of sunrise and sunset
given a UTC date & time and a set of coordinates.

I don't care about a specific programming language, as long as I can
figure out the formulae behind the thing.

Thanks in advance,
--
Martijn @ Coppoolse .com

Astronomical Algorithms by Jean Meeus

(M?ht?n) wrote in message . com...
Hello all,

I'm sorry if this question is out of place here, but I have no idea
where to look.

I'm looking for a way to calculate the time of sunrise and sunset
given a UTC date & time and a set of coordinates.

I don't care about a specific programming language, as long as I can
figure out the formulae behind the thing.

Thanks in advance,

http://www.freevbcode.com/ShowCode.Asp?ID=341

for clsSunrise by Scott Seligman

"M?ht?n" wrote in message
om...
Hello all,

I'm sorry if this question is out of place here, but I have no idea
where to look.

I'm looking for a way to calculate the time of sunrise and sunset
given a UTC date & time and a set of coordinates.

I don't care about a specific programming language, as long as I can
figure out the formulae behind the thing.

Thanks in advance,
--
Martijn @ Coppoolse .com

In article ,
says...
Hello all,

I'm sorry if this question is out of place here, but I have no idea
where to look.

I'm looking for a way to calculate the time of sunrise and sunset
given a UTC date & time and a set of coordinates.

I don't care about a specific programming language, as long as I can
figure out the formulae behind the thing.

Thanks in advance,
--
Martijn @ Coppoolse .com


At one point, there was such a file by s.a.a. contributor Paul Schlyter
in Bob Stout's C SNIPPETS (www.snippets.org), but I can't seem to
locate it anymore. If you can't locate it any other way, email me and I
send a copy I have to you, from an older version of SNIPPETS. It's
about 500 lines, or I'd just post it here.

--

-- Len Philpot - --
------ ----- http://philpot.org/ --

"Len Philpot" wrote in message
...
In article ,
says...
Hello all,

I'm sorry if this question is out of place here, but I have no idea
where to look.

I'm looking for a way to calculate the time of sunrise and sunset
given a UTC date & time and a set of coordinates.

I don't care about a specific programming language, as long as I can
figure out the formulae behind the thing.

Thanks in advance,
--
Martijn @ Coppoolse .com


At one point, there was such a file by s.a.a. contributor Paul Schlyter
in Bob Stout's C SNIPPETS (www.snippets.org), but I can't seem to
locate it anymore. If you can't locate it any other way, email me and I
send a copy I have to you, from an older version of SNIPPETS. It's
about 500 lines, or I'd just post it here.

Sky & Telescope published a BASIC language program for computing
times of sunrise and sunset. I believe that it was called
SUNUP.BAS, and should be available for download from the S&T
site:

http://skyandtelescope.com/resources...icle_326_1.asp

The program was from August 1994.

"Greg Neill" wrote...
"Len Philpot" wrote...
At one point, there was such a file by s.a.a. contributor Paul Schlyter
in Bob Stout's C SNIPPETS (www.snippets.org), but I can't seem to
locate it anymore. If you can't locate it any other way, email me and I
send a copy I have to you, from an older version of SNIPPETS. It's
about 500 lines, or I'd just post it here.

Sky & Telescope published a BASIC language program for computing
times of sunrise and sunset. I believe that it was called
SUNUP.BAS, and should be available for download from the S&T
site:

http://skyandtelescope.com/resources...icle_326_1.asp

The program was from August 1994.

Brilliant! Thanks a bunch for all those who replied.

I've got enough to go on with for now.

Thank you very much!
--
Martijn Coppoolse