The question you ask is ambiguous:   September 2013 begins on a Saturday and ends the following Sunday ... how many weeks, to you, is that?   You might say six, or you might say four.   Date-calculation routines are available in abundance on CPAN, but first you must nail-down the exact meaning of the question for you.   See for example Date::Calc, Date::Manip for the math heavy-lifting.

In reply to Re: No: of weeks in a month by Anonymous Monk
in thread No: of weeks in a month by Anonymous Monk

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