Determines the ordinal (day number, in the year) of the first day of the month in which a given date falls.
A number corresponding to a day-number in a year.
FirstDayOfMonth(date)
Day, DayOfWeek, DayOfWeekAsString, DayOfYear, DaysInMonth, DaysInYear
| Parameter | Description |
|---|---|
date |
Date/time object, in the range 100 AD-9999 AD. |
When passing a date/time value as a string, you must enclose it in quotation marks. Otherwise, it is interpreted as a number representation of a date/time object.
<h3>FirstDayOfMonth Example</h3> <cfoutput> The first day of #MonthAsString(Month(Now()))#, #Year(Now())# was day #FirstDayOfMonth(Now())# of the year. </cfoutput>