I mentioned that it was pretty light out in Dawson City at midnight; here's a bit of data to illustrate what I'm talking about.
This is today's time of sunrise and sunset in the major centres we've been through, together with the length of the day:
Toronto, ON 5:59am 8:49pm 14hr 50min
Winnipeg, MB 5:48am 9:21am 15hr 33min
Saskatoon, SK 5:17am 9:09pm 15hr 52min
Edmonton, AB 5:37am 9:42am 16hr 5min
Dawson Creek, BC4:53am 9:21pm 16hr 27min
Whitehorse, YT 5:19am 10:54pm 17hr 35min
Dawson City, YT 4:57am 11:49pm 18hr 52min
As you can see, the days are about four hours longer in Dawson than they are at home. That's only part of the picture, though; twilight lasts far longer up there, so the effect is magnified.
Tonight (it's actually the 24th as I write this) I'm seeing stars for the first time in over a week. It's midnight, and I'm in central BC, so it's dark enough out to see them.