Returns an integer between 1 and 12, inclusive, that represents the month of
the year corresponding to the date provided as an argument.
Month( number )
The argument number is any numeric expression that can represent a date and/or time from January
1, 100 through December 31, 9999, where January 1, 1900 is 2. Numbers to the
left of the decimal point in number represent the date; numbers to the right represent the time. Negative
numbers represent dates prior to December 30, 1899. If number is Null, this function returns a Null.