# MonthLen ( themonth ; theyear )

Returns the number of days in the given month of the given year

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Theo Ros * http://notapplicable.com |

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

Because the MonthLength() function by Andrew Sasaki uses the Julian Calendar method of determining the leapyear, the results can be wrong.

This better function works for both the Julian and the Gregorian calendar

Returns the length of the month given in the year given

Return type: Number

Syntax: MonthLen ( themonth ; theyear )

In: themonth - integer value ( 1-12 ). If empty, the current

month is assumed

theyear - the year to check (not a date, but an integer)

if theyear is earlier than 1583, the Julian Calendar

is assumed.

If empty, the current year is assumed

## Comments

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.