How seasonal shifts in light and darkness affect moods, weight gain, and fertility Living in a northern city like Edmonton, it’s impossible not to notice the wild swings in daylight from season to season. At the summer Solstice in June, we have just over 17 hours of daylight, whereas at the winter Solstice in December, it dwindles to a mere seven and a half hours. Many cultures have a tradition of gathering with family and friends to eat, drink and…