weekday

This function returns an integer that represents the day of the week.

As indicated by the following table, the returned value depends on the workflow system platform:
Returned Value Day
0 Sunday
1 Monday
2 Tuesday
3 Wednesday
4 Thursday
5 Friday
6 Saturday
The syntax is as follows:
weekday(time_expr)
where time_expr is an expression of type time.
The following example shows the systemtime function as input for the weekday function. If the system time is Tuesday, the weekday function returns the value 2.
weekday(systemtime())