date

Any expression that can represent a date. If date contains Null, Null is returned.

firstdayofweek

A constant that specifies the first day of the week. If omitted, vbSunday is assumed.

The firstdayofweek argument has these settings:

The Weekday function can return any of these values:

The following example uses the Weekday function to obtain the day of the week from a specified date:

Dim MyDate, MyWeekDay
MyDate = #October 19, 1962#   ' Assign a date.
MyWeekDay = Weekday(MyDate)   ' MyWeekDay contains 6 because MyDate represents a Friday.

Version 1

Reference