In summary, Diwali is a festival that celebrates the victory of light over darkness, wisdom over ignorance, and courage over cowardice. It is symbolic and also refers to mankind's harnessing of fire. Darkness is disappearing on Earth and in some regions, like Alaska, the sun may disappear for a few hours during winter months. During summer, there are well lit nights but shade is still present. Some people dread Diwali because of the noise from crackers.
ah yes, I should have clicked the link before I posted.
The sun never shies away completely in my region, at least, not in the sense that it's not somehow "above" us, but only for a couple hours in the winter months (like four, I'd venture). It's 9:00am right now and getting light, so it's not that bad yet; I'd give it another month or two.
But I suppose cloud cover and the http://en.wikipedia.org/wiki/Inversion_(meteorology)" [Broken] will keep you from ever actually seeing the sun most of that time.
During the summer we do actually have quite well lit nights, but shade is still very potent; it's more comparable to having a long dusk that transitions straight to dawn, probably... the sun actually sets, but you still see it's glow behind the horizon and it never wanders that far before coming back up.