I don't think it's a specific time of the season. I just think it's whenever you are going to purchase new clubs. I get different clubs at different times of the season and it's never the same. Just get fitted and test the new stuff before purchases no matter when that is. If you're thinking about buying at a specific time and you want to change...say irons. Just don't do it right before important events like club championships. It always takes me a few times to dial in yardages and get the feel for my new sticks.... Just my opinion, but good luck.