The standard algorithm has the schedule start with zone 1 and continues through all zone until just before sunrise. This starts the system with the same zone at the furthest from sunrise and finishes with the same last zone just before sunrise. This creates a disparity in the amount of time different zones have to “soak” before evaporation from the sun.
To ensure that each zone has an opportunity to get longer soak times, could the algorithm be modified to have a rotation in the first zone to start
Run 1 - Zone 1 start first end with last zone
Run 2 - Zone 2 start first end with zone 1
Run 3 - Zone 2 start first, end with zone 2…etc.