The central operating unit basically has two switching times per group.
If you have configured ONE time with a switching time of, for example, 7:00, the central operating unit assumes that this is probably an open command for roller shutters. All times between 0:00 and 11:59 are understood as an open command.
Since the opening is then already covered by a switching time, the astro time is blocked in the morning.
The same applies to closing. If a switching time was used between 12:00 and 23:59, the astro time for evening is blocked.
Morning always blocks time 1
Evening always blocks time 2
Evening always blocks time 2