Ranked decay

Hello, I have '1 day remaining' to play ranked games on my account to keep myself active, but for the fact that the season is ending on the 11th/12th November, I'm trying to hold out playing so that I can play just 1 more game and then no more for the rest of the season. For this reason I've left it to get ridiculously close to my inactivity. I was wondering, if I waited until tomorrow to play a ranked game, in which it said 'you have 0 days remaining' is that too late? Would I decay? I don't want to wait until tomorrow and be slapped with Plat 1 but at the same time I don't want to play today, and have to play another game on the day the season closes.

If a Riot Employee could confirm just to be extra sure that would be awesome but all opinions appreciated.

Thank you.