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Syntax
Date.DayOfWeek(dateTime as any, optional firstDayOfWeek as nullable number) as nullable number
About
Returns a number (from 0 to 6) indicating the day of the week of the provided dateTime.
dateTime: Adate,datetime, ordatetimezonevalue.firstDayOfWeek: ADayvalue indicating which day should be considered the first day of the week. Allowed values are Day.Sunday, Day.Monday, Day.Tuesday, Day.Wednesday, Day.Thursday, Day.Friday, or Day.Saturday. If unspecified, a culture-dependent default is used.
Example 1
Get the day of the week represented by Monday, February 21st, 2011, treating Sunday as the first day of the week.
Usage
Date.DayOfWeek(#date(2011, 02, 21), Day.Sunday)
Output
1
Example 2
Get the day of the week represented by Monday, February 21st, 2011, treating Monday as the first day of the week.
Usage
Date.DayOfWeek(#date(2011, 02, 21), Day.Monday)
Output
0