{{tag>Index Function Function_List Date_And_Time}}
====== FIRST_DAY_OF_MONTH ======

===== Description ===== 
Calculates the date that corresponds to the first day of month of the provided date
===== Parameters===== 
Attribute of the Date type or date constant or calculation producing a date
===== Example ===== 
<code aim>IF FIRST_DAY_OF_MONTH (Account.OpeningDate=01/10/2004) THEN ... </code>