When do announced Netflix series disappear?

Netflix says that the series will expire on September 1st. Does that mean that they expire a minute after 11:59 p.m. On August 29th or I still have the 9th of September and they expire at midnight on 2.9?

If they should expire on September 1st, you can watch them up to and including August 31st (11:59 pm). But it is also in the description of the respective titles.

Except for "Expires on XX" Netflix gives no description! They don't even write the year of publication

I then say "Availability: Until August 31, 2020"

There's no such thing, console players are preferred to PC players again

I use Netflix via browser on the PC ^^

Me through the app

I say 'Availability until: dd.mm.yy', in which case I can still watch the film / series on the day of the specified date.

Current example of the series 'Tales of Irish Castles', 'Availability until 08.09.20'.

The series is still available on 9/8/2020, not on 9/9/2020.