Next run
The day the system next makes an invoice from the schedule. While the schedule is paused, no invoice is made on that day either; after you resume, generation restarts from the next due occurrence.
In the list the date also shows whether the run is Due today, how many days away it is, or how many days overdue. The cash flow forecast projects the schedule's items from this date on; once an occurrence has its invoice, it counts the invoice instead.