Cancel Netflix Free Month?

I have had a free trial month at Netflix for 3 days, but would like to cancel after this month, so there are no costs. Is there a notice period when I have to cancel at the latest, e.g. 2 weeks or so? Or is it enough if I quit the day before?

It is also sufficient if you cancel the day before.

But you can also quit right away, because you can still see everything.