I have similar watering restrictions to the OP, however… I want to Maximize my 2 days by having SmartWatering run BOTH 6am AND at 4pm also, as soil dries out heavily in one day.
I have 4 zone indoor smart timer. All my tweaking of SmartWater schedule resulted in the 6am cycle running thru the 4 zones twice and finishing at like 730.
Only solution I have is for Smartwater controlling the morning run, and a Manual schedule to trigger the afternoons.
I want to use SmartWater because Florida summers are so random with afternoon showers and summer storms. And when it’s not raining… the summer sun and sandy soils in the lawn is getting sucked dry.