Reference > Functions reference > Date functions > Month
Returns a number from 1 to 12, representing the month of the year in which a date occurs.
date - any calendar date
Data type returned 
Originated in 
FileMaker Pro 6.0 or earlier
Month ( "3/19/2019" ) returns 3. This example assumes that the operating system date format is set to MM/DD/YYYY.
Month ( Payment ) returns 3, where Payment contains March 19, 2019. (The Payment field must be of type date.)
"Bill Due by: " & Date ( Month ( DateSold ) + 1 ; Day ( DateSold ) ; Year ( DateSold ) ) returns Bill Due by: followed by a value that is one month later than DateSold.
Important  To avoid errors when using dates, always use four-digit years. For more information about how FileMaker Pro handles two-digit dates, see Entering dates with two-digit years.
Related topics 
Functions reference (category list)
Functions reference (alphabetical list)
About formulas
About functions
Defining calculation fields
Using operators in formulas