Anytime is good muskie time just get out on the water, I have caught muskies in storms this year and also mid day blue bird and flat calm. Yes, some muskies were right on the majors of moon phases, and yes some were first and last light but if I had not been fish I wouldn't have caught those fish we got between what's considered the time that "fish don't bite"
Last weekend I went out muskie fishing for the day with my boat partner. It was great conditions all morning, we saw multiple fish but none would eat under "prime condition" it got hot and sunny and we boated our first fish at 11:45am. We went in to eat, relaxed and came back out. Same conditions unbearable heat and calm, within 20 minutes we boated a 46" fished until sundown and didn't even have a follow, stick with it on the non favorable times, it will pay off