My only experience is around here, and last month, when yet again the cows around here got buzzed by a low-flying Connie, I did some digging around.
On the
FAQ, they state (in addition to refusing to give any information on where and when they'll fly by somewhere):
My father will celebrate his birthday e.g. this February – where do you fly around that date?
For meteorological reasons we can fly in the summer season only (VFR, low-altitude flights). Our season is from late May to early October.
Of course, the question is posed from the perspective of what they're doing around their Basel base; and I think they took it to NA in the past, so who knows at what altitude they'll be doing it?