Midnight Sun

Technically 10:19pm Sun

I wasn't exactly sure how my body would react to 24 hour daylight. Having now experienced it, I would say that in the evening after dinner it is amazing for outdoor activities and photographic light. And at sleeping time, it is completely irrelevant. On road trips, in Norway, sometimes you can feel the melatonin kick in when you're driving through a long tunnel...

In Adelaide, I am awake during the light part of the day (save occasional nap and sleep in) and I sleep during a portion of the dark part. In the morning in summer I sleep for a portion of the light part.

Technically 2:45am sun.

In the Arctic Circle, the slightly less light part is called nighttime and so you can associate that with sleep.

One guy I drove past at 10:30pm associated it with a great time to mow the lawn.

I will say that if you do want an argument for 24 hour daylight being unnatural, that I have now seen sheep and cows eating grass and walking around at 2 in the morning so it does feel like some level of human self control is required to regulate your behaviour and not do too much eating or photography when the light is low.

Or maybe they were just lawn mowing too...