Firstdayofmonth()

Returns the number of the day in the year, the first day of this month falls on

NUMERIC = Firstdayofmonth(
				
					
					
						date
					
				
				)

Argument	Summary
date	date

Supports named-parameter calling allowing you to use the function like:

Firstdayofmonth(
   date=?
);

Supports passing parameters as a structure using ArgumentCollection:

Firstdayofmonth( ArgumentCollection={
   date : ?
} );