New user here, but it does appear to change daily on mine. Yesterday it was showing 3 days this week would get water, but today it’s showing 4. We have small chances of rain out here so I think it maybe it plans to not water due to rain chance, but as it gets closer and realizes rain won’t actually happen it adds more days. In fact I had a notification over the weekend saying it was cancelling a rain skip because of lack of rain. Something to that effect.
