DayOfWeekFromDateTime

Returns a numerical value, indicating the day of the week corresponding to the specified DateTime value, where 0 = Sunday, 1 = Monday, etc.

The integer portion of the DateTime value specifies the number of days since January 1st, 1900, and the fractional portion of the DateTime value specifies the fraction of the day since midnight.

Usage

DayOfWeekFromDateTime(DateTime)

Where: DateTime - a double-precision decimal DateTime value

Example

DayOfWeekFromDateTime(39448.25000000)  will return a value of 2, 

indicating Tuesday, for January 1st, 2008