sum product to count data in a date list

Hi All,

I have been using the sumproduct formula to count how many times a certain piece of data appears...which works fine...for text purposes such as names, initials etc...

I now need to amend the formula to count how many times a date appears in a range of dates.

I know when you use the sumproduct...dates must be input and formatted as text.

example

A1
01-Jan
02-Jan
5-Feb
7-Feb
12-Feb

Basically i need the formula to only count dates with feb in.

Help on this would be appreciated.

Thanks