Answer: you can think of rain delay as ‘silencing’ the watering while the rain delay is active. As a result, programs that should have started during rain delay will NOT be rescheduled, and program that started shortly before the rain delay is active and got interrupted will NOT be resumed. Actually, more precisely, it should be that ‘zones which are affected by rain delay’ are silenced, in contrast, zones that are set to ‘Ignore Rain Delay’ will not be affected by rain delay.
Thank you. So, I don’t have to calculate my rain delays to match when I next want the sprinklers to turn on, I can just extend the delay past the program start time and that program will be skipped until the next day (assuming daily runs, etc.). That’s exactly what I was hoping for.
(“Cool factor” aside, this is infinitely better than my old manual timer!)