Click the '...' button to display the calendar. Notice that you can set the time at the bottom of the calendar.
You cannot select Sundays.
Select any Friday of the month.
On Fridays you cannot set times earlier than 08:00 and later than 21:45.
On Saturdays you can set only times between 11:00 and 17:00.
Select any day of the month except Friday, Saturday or Sunday.
You can set any time you want.
Set the time to 23:00, and change the day to a Saturday. Notice that the time
automatically scrolls past 11:00, since that is the earliest valid time for that
day.