Question about N12

Hello, long-time lurker. I have a question about the N12 and when it gets delivered. I rent a house that has been up for sale, and it has been conditionally sold. I don't know much about the conditions of the sale. But when should I expect the N12 if the sale is confirmed? I understand that if the buyer wants to move themselves or their kid in, they can ask the seller to deliver the N12 on their behalf. With the N12, there is a 60-day notice to vacate with 1 month's payment. I guess the question I really have is if I'm given the N12, say tomorrow, would I have to move out in the middle of the month after the 60 days? I do pay rent on the 1st of the month. Or would that N12 be 60 plus the end of the month?