Position of Sun vs time and date?

Hi all...

Here is the background...

Been trimming a friends back yard of large tree branchs for the past few
days....

Some are dead or diseased and some are obviously shading areas where full (or
at least more) sun is desired and some branches have WAY too much weight out to
far and need thinning to avoid breaking...

Well, all the obvious stuff has been done..

Now, there is one part of the yard with a nice flower/plant garden...and these
plants should only have a few hours of sun a day...and if I cut the wrong
branches of the tree that shades it I might mess it up...

So, what I need is the position of the sun as a function of time of year and
hour of the day....and I dont even really need high precision...data for every
hour and every 2 weeks would probably be fine...

Anyone know of a simple online caculator I can use to generate those numbers?
Id rather not install any programs on my friends computer....

Now that I think about it, i could do with even simpler information...just
three numbers per date (again at 2 week intervals).....the compass heading of
where the sun rises and sets and the angle from horizontal/vertical the sun
travels through the sky at the chosen date....

With that info I could take a large sheet of cardboard out in the back yard,
orient it correctly at the right places in the garden and then eyeball along it
to see which branches need to go and stay....

I live at latitude 30 north....

BTW, anyone know when oak trees in northwest florida/the southeast loose their
leaves and when the grow back? (since dates when the tree has no leaves really
wont matter then

thanks for any input

take care

Blll

"BllFs6" wrote in message
...

So, what I need is the position of the sun as a function of time of year
and
hour of the day....and I dont even really need high precision...data for
every
hour and every 2 weeks would probably be fine...

I wrote a pretty high-accuracy BASIC program giving the Sun's
altitude and azimuth for issue #41 of The Orrery newsletter:

http://members.allstream.net/~gneill/

But this is probably more than you need.

How about using one of the on-line data services?
Go to the USNO Data Services web site at:

http://aa.usno.navy.mil/data/ and select

Altitude and Azimuth of the Sun or Moon During One Day


Enter your location and a date. You'll get back a
table of altitude and azimuth for the given date.

"BllFs6" wrote in message
...

So, what I need is the position of the sun as a function of time of year
and
hour of the day....and I dont even really need high precision...data for
every
hour and every 2 weeks would probably be fine...

I wrote a pretty high-accuracy BASIC program giving the Sun's
altitude and azimuth for issue #41 of The Orrery newsletter:

http://members.allstream.net/~gneill/

But this is probably more than you need.

How about using one of the on-line data services?
Go to the USNO Data Services web site at:

http://aa.usno.navy.mil/data/ and select

Altitude and Azimuth of the Sun or Moon During One Day


Enter your location and a date. You'll get back a
table of altitude and azimuth for the given date.