I mentioned before that it’s annoying that you don’t show name of the day in mobile UI. I tried to use workaround and click date picker and get 04.10.2020 which is Sunday. Well the booking grid loaded showing me Monday 28.09.2020 as first result. I would have expected to see that Sunday 04.10.2020 to be shown at first result.
So please just add those shortened name of the days (Mon, Tue, Wed…) before the date!