It's free,

but if you wish donate, even a dollar( no I do not know the person)

But when I can to this side, I got all the DVD from zero to whatever, because all the info in here are free.

Here is the link.

http://stephentrainor.com/tools

BlasR

This program is great. I use it myself a lot and have found it spot on. Highly recommended.

I've heard of tools like this but never tried them. Very cool app. Now if I could just run it on my iPhone ...

The Photographer's Ephemeris is a great tool. The feature set has really evolved to put it ahead of other such sun/moon calculators that I've seen. Having this on my laptop is really great when traveling in addition to pre-trip planning.

I'm pretty sure there are sun/moon calculators for the iPhone, although not as full-featured as this.

Hi Wayne have you looked at these two apps?

http://www.chemicalwedding.tv/helios.html

http://spiraldev.com/focalware/


p.s. It would be cool if these apps could talk with a weather app to let you know what the cloud cover is beyond your sight for the twilight hours

While not an application, is this the kind of thing you think would be helpful?

http://www.weatheroffice.gc.ca/astro/clds_vis_e.html

Andrew