My house is on a NE-SW axis, the back garden is the NE bit.
In the house where I grew up the back garden was south facing and I remember having the curtains closed all the time as the sun either beamed directly into your face or bounced off the tv so we could hardly see it. The rooms were all on the back (it was a weird 70's style) so there was no escape.
So, this house, I have no immediate neighbour to my west which helps. We get sun at the bottom end of the garden in the morning when the sun rises over the house, then it moves its way down the garden as the day goes on. Right now I have full sun.
I actually love the fact that we have two patio areas, one at the top of the garden where we can sit in sunshine, the other is next to the house so stays shady till lunch. That means my albino white haired child can play without being in direct sunshine. Plus I get sun stoke in this country (West Yorkshire!) so I like the shade 
My lounge is on the back, the dining room is at the front which I like having breakfast in there in the morning light. My kitchen is at the back. It is teeny and we are having an extension built next year, I am having rooflights put in.
Regarding rooms that face north, I think it depends on how many windows there are and the size of the windows. I have french doors in a bay window so I have 2 full height glass doors, plus 4 windows in the bay and another window.
We inherited a huge tree which overshadowed the garden and my son's bedroom so we had it removed. It made a huge difference.
Good luck with your viewings, take a photo of the garden that way if you book to second view, go at a different time and take another photo so you can see how much sun you get.