When you are drinking your beer-o-clock brew, consider this:
Does the sun shine from the North or not?
On the summer solstice, for example, the sun rises in the NE 51° from due north and sets in the NW 51° from due north in the other direction (or 309° continuing clockwise from azimuth/due north). "Well, that's just the summer solstice," you say. Actually, the sun rises and sets slightly to the north in Calgary every day between March 18th or so and September 21st or so. In other words, if you were standing to the south of a tall wall on June 21st in Calgary, the sun might not rise until 10-11AM and would set around 5-6PM depending on the height of the wall, distance to the wall, etc. That excludes some pretty prime patio/outdoor hours in a city where the average 6PM summer temperature in June is <15°C, and would also have a significant effect on plants and the type of light plants get.
Just saying. Enjoy your beer!
http://www.timeanddate.com/worldcloc...&afl=-12&day=1