When Is It A Good Time To Prune Euonymus Vine In Flagstaff?

Question

My elevation is 7000 ft. So winter can stay around longer, not uncommon to have snow in late May.

Answer 1

Now, would be a good time, actually!

https://www.gardeningknowhow.com/ornamental/shrubs/euonymus/pruning-evergreen-euonymus.htm