First--thanks all. I am feeling my way and the quick and helpful responses are greatly appreciated. I am going to now take some time and work through all your thoughts and will repost. And of course, I meant dusk to dawn...As for even and odd numbered days, even would mean the 2nd, 4th, 6th, 8th, et...

I am a new user/beginner. I would appreciate direction on programming that would trigger a light from dawn to dusk on even numbered calendar days for a signal application. I can live with an LED only signal from one of the IO ports (3 v or 5 v) In a perfect world, I would want a program that would a...