I spent a while arranging these and captioning them last night, but when I pulled up the blog entry to add something to it, I found that between lousy hotel Internet and Blogger misbehaving, the PHOTOS were gone from the entry. So I've re-added them quickly. Times are in the filenames.
I took a series of photographs for you, of the 'night' sky on the evening of the June 21st. That day at noon the sun was directly overhead the Tropic of Cancer, and we're 36 degrees north of there. That means its zenith was 54 degrees above the horizon, and from our perspective today the sun described a big loop, arcing diagonally across the sky, westward and downward to the southwest horizon, setting at 22:25 local time, and then sneaking back along, just below the southern horizon, towards the east, reaching a nadir of seven degrees below the horizon and then rising again from the southeast at 3:58 local. Officially night began at 23:50 and ended at 02:34 If that's symmetrical, then the darkest point of the night should be about 01:15.
Curiously, the Sunrise/Sunset times link on the Nav Canada site was broken when I tried it, so I had to call a briefer instead. I admitted that it was for my blog. No shame.
There are no tricks with the camera: no long exposures or filters. It's just an ordinary camera. I tried to keep the automatic light meter from fixating on the lights along the highway, so it would expose the sky correctly. The camera started thinking that it was dark around 11:30, but the sky was still quite light. And this is a cloudy night. You can see how light it is where the clouds aren't.
Flip that around to December and the sun struggles seven degrees into the sky at high noon, only to set two hours later. And after it sets there it is very very dark.