Dear Dave,

The smart watering sequence is random. The execution order of the Smart schedule is generated as follows:
Since the information such as plant types, soil conditions, and sprinklers for each device varies, the system calculates which devices have a more urgent watering need, ranks them, and arranges watering accordingly.

If you do not want the Smart Zone schedule to override your programmed schedule while still wanting to use the rain delay feature, you can set the Smart Zone level from Advanced to Basic. This mode will only skip rainy days for your programmed schedule.

For more information about Netro's smart watering, here's an article on the Netro's three watering modes that may be helpful: https://netrohome.com/forum/posts/111
 
If you have any further concerns or questions, please do not hesitate to reach out to us. 
 
Regards, 
Netro Support