Conversely why do my neighbors start mowing at 8:30 at night ? They are retired in their late 70s and are out and about playing hall monitor to everyone’s lawn and landscaping. If there are set rules by the HOA basic things like this should be in written form to new residents.

What HOA are you talking about?
Quite often seniors start working outside either very early or very late to avoid the heat.

Put a pillow over your head

Ear plugs would come in mighty handy too.

I bet the guy know sbetter when they are allowed to start :) Do not think you are the first one wanting to talk to him. Hopefully my neightbour cuts grass with a hedge trimmer and that's not that loud, we got echo for shrubs, not the worst choice. I tried it once when got some issue with my lawn mower
Ear plugs won't help and as for me I get a headache every time I use them. Guess, that's how my body reacts to the times I was working on the rig