The only time I see contrails are near dawn or dusk. The sun is angled in such a way to reflect light from the ice crystals being formed.

The phenomenon of ice crystals forming behind the planes happens all the time, but the difference is being able to see them. You need the sun's rays to reflect on the crystals for this to occur. (As far as I know this is how it works)

Does anyone remember if there were chemtrails or contrails on the days following 9-11? Supposedly all air traffic was grounded--a certain group of people got to fly during those days though. I can't say I remember looking at the sky, but then again I was an ignorant sheep then too.

Russ I feel for you and your problems with these trails. I don't have any problems with them, but it would be a horrific thing to go through. Take care of yourself.