Weekday function

Returns a Variant (Integer) containing a whole number representing the day of the week.

Syntax

Weekday( date [, firstdayofweek ] )

The Weekday function syntax has these arguments:

Argument	Description
date	Required. Variant, numeric expression, string expression, or any combination of these that can represent a date. If date contains Null, Null is returned.
firstdayofweek	Optional. A constant that specifies the first day of the week. If not specified, vbSunday is assumed.

Settings

The firstdayofweek argument has these settings:

Constant	Value	Description
vbUseSystem	0	Use the NLS API setting.
vbSunday	1	Sunday (default)
vbMonday	2	Monday
vbTuesday	3	Tuesday
vbWednesday	4	Wednesday
vbThursday	5	Thursday
vbFriday	6	Friday
vbSaturday	7	Saturday

Return Values

The Weekday function can return any of these values:

Constant	Value	Description
vbSunday	1	Sunday
vbMonday	2	Monday
vbTuesday	3	Tuesday
vbWednesday	4	Wednesday
vbThursday	5	Thursday
vbFriday	6	Friday
vbSaturday	7	Saturday

Remarks

If the Calendar property setting is Gregorian, the returned integer represents the Gregorian day of the week for the date argument. If the calendar is Hijri, the returned integer represents the Hijri day of the week for the date argument. For Hijri dates, the argument number is any numeric expression that can represent a date and/or time from 1/1/100 (Gregorian Aug 2, 718) through 4/3/9666 (Gregorian Dec 31, 9999).

Query examples

Expression	Results
SELECT DateofSale, Weekday([DateofSale]) AS Expr1 FROM ProductSales;	Returns the values from the field "DateofSale" and number representing the 'Weekday' of these date values. (By default Sunday is considered the first day of the week; 1).
SELECT DateofSale, Weekday([DateofSale],2) AS NewWeekDay FROM ProductSales;	Returns the values from the field "DateofSale" and number representing the 'Weekday' of these date values. (considering Monday as first day of the week).

VBA example

Note: Examples that follow demonstrate the use of this function in a Visual Basic for Applications (VBA) module. For more information about working with VBA, select Developer Reference in the drop-down list next to Search and enter one or more terms in the search box.

This example uses the Weekday function to obtain the day of the week from a specified date.

Dim MyDate, MyWeekDay
MyDate = #February 12, 1969#    ' Assign a date.
MyWeekDay = Weekday(MyDate)    
' MyWeekDay contains 4 because 
' MyDate represents a Wednesday.

See Also

Choose the right date function