Latitude for SAD Sufferers

Hi,

I'm going to be doing voluntary work for two years, however because I suffer from SAD they need to know exactly how many hours of daylight I need to reduce or eliminate the symptoms.

My current latitude is 55°N, can anyone point to a reliable source of locations in the world which would make the condition manageable?

Thank You,
-Sam Kennedy

Check out a map with latitude lines. Or go on google maps, click on map labs on the lower left corner, there there is a tool that allows you to find the lat long of anywhere in the world.