Question

why February month only 28th days...
tell me why....​

Answer 1

Because it only 28th months

Answer 2

As here is a reason for you

Because Romans believed even numbers to be unlucky, each month had an odd number of days, which alternated between 29 and 31. But, in order to reach 355 days, one month had to be an even number. February was chosen to be the unlucky month with 28 days.