It is just over 6 months. It is exactly 27 weeks.
Exclusively, five months
Including the start and end month in the calculation, there are seven months between the two months.
6 months fall between February and September: March, April, May, June, July and August. That time span is half of a year.
eight months (March, April, May, June, July, August, September and October)
There are nine months between August and May, counting August as the starting month and May as the ending month. The months in between are September, October, November, December, January, February, March, and April. If you exclude August, there are eight months from September to April.
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.
From the 1st of October to the 1st of March is 5 months. Between the month of October and March are the 4 months of November, December, January and February.
7 months
21 months.
November is the 8th month following March, i.e. between March 1 and November 1 is 8 months.
3 years = 36 months
January follows September by 4 months. There are three intervening months: October, November and December.