What Time is Too Early to Mow Your Lawn on the Weekend? [Poll]

I woke up this morning at 5 O'CLOCK⁉️  Ha!  Yeah.  That's in the morning people.  To the sounds of my neighbor taking care of his perfectly manicured lawn.

I can't be out of line saying this is too early right?  So what is too early?  Most people don't get up at the crack of dawn to crank that mower during the week.  I guess we're all just too busy or maybe there's some kind of unspoken common courtesy rule but don't those rules exist to some degree on the weekend too?  And if so, what is the unspoken rule?