The time to prune your trees in our area is between January-March...but quite frankly, February was miserable, I can't remember January, and so now here we are in March doing the pruning. Ok, not we, but hubby! We pruned in March last year too. At least, although dreary, the weather has broke a little. Pruning can be a work out so if you don't have to tromp around in feet of snow, it makes it a tad easier.
This is a Quince tree after pruning.
Here hubby is evaluating which cuts he'll take.