The start time will be the same for all of your zones. If they are all scheduled to run that day, Gro will cycle through them one at a time beginning at the chosen start time. However, if you use soak cycles with any of your zones, those zones will repeat later in the day at intervals you set after the first start time.
You can adjust the start time to be:
You can make this adjustment in the app by tapping on “Schedule” section. Scroll down just below the calendar and tap the “Starts at” text. From there you can see the three options: before sunrise, after sunrise, and a set time of day.