The land of the midnight sun

In 21 days I'll be up on Great Slave lake near the Arctic Circle in the Northwest territories of Canada.
Sleep is going to be at a premium....due to lack of darkness. Check out these sunset/sunrise times.

Jun 1, 2008 3:57 AM 11:16 PM 19h 18m 36s
Jun 2, 2008 3:56 AM 11:18 PM 19h 22m 35s
Jun 3, 2008 3:54 AM 11:20 PM 19h 26m 25s
Jun 4, 2008 3:52 AM 11:22 PM 19h 30m 06s
Jun 5, 2008 3:50 AM 11:24 PM 19h 33m 36s
Jun 6, 2008 3:49 AM 11:26 PM 19h 36m 56s
Jun 7, 2008 3:47 AM 11:28 PM 19h 40m 06s
Jun 8, 2008 3:46 AM 11:29 PM 19h 43m 03s

So basically it'll be dark (or almost dark) for maybe 2 hours a night. I better bring a sleeping mask.