How many days are there in September, October, and November altogether?
So we need to add together the total number of days in September, October, and November. You may know this rhyme, which helps to remember how many days there are in each month. Rhyme goes like this. 30 days has September, April, June, and November. All the rest have 31, except for February it’s the one, which only has 28 days clear and 29 in each leap year.
So September and November have 30 days, and October has 31 days. Now that we know how many days each of these months have, we just need to add them together. 30 and 31 and 30 equals 91 days. There are 91 days in September, October, and November altogether.