Water days off by one?

Can you see my screenshots (computer screen overlaid with picture of my phone screen) slightly up in this thread ? No, my mobile app isn’t right either per that response (to Mitchell who also chimed in here). Yes, I do rather routinely mark the schedule start date ahead as a means of getting it to water more. As flex daily isn’t yet performing for me, and the variability of the heat/drought over a month doesn’t let the flex monthly work either (without killing a ton of stuff, 110 degrees for example will scorch everything on flex monthly assumptions). So my normal operating mod is to use flex monthly and when I know there’s a watering gap (given the drought or heat) that will cause widespread destruction - I reset the start date to lessen the gap. As you can see, I am currently experimenting with flex daily, which (should it work) would allow me to stop doing this.