Toronto Harborfront Center is at 43.6397877,-79.3836877,17.12z according to Google. If I look for the southern most part of Germany, that seems to be Oberstdorf which is at 47.3997083,10.2805651,14.08z ;)
Or in other words, Germany in terms of natural sun light exposure in winter is way worse than Toronto. In fact, in Germany its dark much earlier and sun comes up much later for longer. I hear cloud cover is very comparable to the Toronto weather you describe so aptly.
One of the most populated areas of Germany is at around 51.5, if we wanted to "guess" where aldipower might be from. Going mostly straight up from Toronto, if you want to hit "civilization" at that level, that's Waskaganish, QC or Moosonee, ON a bit more south, right on our beautiful Hudson Bay.
I complain less and less about our beautiful country, the more I compare it w/ the world ;)
Europe is going to be in big trouble if the gulf current ever stops flowing.
Not much chance of Vit D from sunlight for almost half the year.
Penzance 50.1 N London 51.5 N Berwick 55.8 N
Edinburgh 56.0 N Aberdeen 57.1 N Thurso 58.6 N
Kirkwall 59.0 N Lerwick 60.1 N Haroldswick 60.8 N
I take 30 minutes longer lunch breaks in winter the days the sun is out, just to be able to get outside.
It's more or less impossible to get natural Vitamin D otherwise -- any spare time will be during the dark hours.
Also: Look up New York City ;)