There are no right answers, traditional wisdom is not always correct (sometimes it is downright wrong), so do what is convenient for you, see what happens, and learn from that.

Jackie

I agree with Jackie, you can't go by "tradition". You have to let your roses tell you when it's time. I watch my roses and wait to see them start to fatten up the red leaf buds along the canes. Once I see that I know they are waking up and starting to grow. That's when I prune. I have no idea when that might happen for you so go out and check your roses. If that's already started you can go ahead and prune them. Normally I do two prunings though. The first one is early when the have started to grow but I find I usually have to go back around after they've leafed out because there may have been some further die back or there may have been a late freeze that took some cane. I don't know if that happens in your climate or not.