I grew up right on the 8.5 hour line on your map. A happy day occurred near the spring equinox in March when I would walk home from my paper route in the evening and the snow had melted enough that there were bare patches of asphalt on the road and the sun, though setting, still peeked above the horizon. This was after six months of delivering papers, mostly in the dark. I looked forward, then, for up to 15 and a half hours of daylight for the next six months.
Now I cheat the sun. I spend the longest daylight times of the year in the North, and the shortest daylight times in the south. I gain several hundred hours of sunlight in the process.
Note that every place on earth experiences precisely half the time with the sun above the horizon, and half with the sun below the horizon. Your latitude simply determines the distribution of those hours.
Thanks for the post.
Asks a former pulp savage.