It’s not really a thing. It’s more of a tease. Like it’s not really a rule; just a suggestion. The farther down the sun goes, the more it just slides north instead of actually setting. Then, when it finally does set, it still doesn’t get dark right away; the sun is still sliding sideways just below the horizon, and twilight lasts for more than an hour! We’re in Saskatoon. 2017 summer trip map We’ve been staying at County and Regional parks. Last night’s stay at Foam Lake City Park. And free firewood.