September is only one month ! September has 30 days.
five
Including the start and end month in the calculation, there are seven months between the two months.
Four. September, October, November and December.
Between the months of August and February fall the months of September, October, November, December, and January, which adds up to five months.
There are 5 months between June and December. July, August, September, October and November.
The following year's July comes 10 months after September.
4 months
January follows September by 4 months. There are three intervening months: October, November and December.
Exclusively, five months
7 months
21 months.
3 (excluding May and September) - the summer months of June, July and August.
9 months.
3 months and a day.
4 months (June, July, August, September)
five
If you count September of 2012 and March of 2015 as full months, then there are 31 months. The number will change depending on whether or not you include either or both of these months.