Does day 1 confinement start from date of delivery or discharge from hospital with or w/o nanny?

Does day 1 confinement start from date of delivery or discharge from hospital? I extended my 2 days stay in hospital and ordered food catering. Food ending on its 28th days on 6 May. But I delivered on 6 April 2023 and discharge from hospital on 9th May. If I'm doing 30 days confinement, when is my last date of confinement? Is it 6 May(baby full month) or 8 May?