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--- syntax:functions:weekday [2015/03/03 23:18] – created dmitry
+++ syntax:functions:weekday [2021/08/30 03:11] – craigt
@@ Line 1: / Line 1: @@
-===== WeekDay(date_as_number) =====
+====== Weekday(date) ======
+Category:  Date and Time function
-The day of the week starting from 1 (Sunday) to 7 (Saturday).
+\\
+=====Description=====
+This function returns the corresponding day-of-the-week number, from 1 (Sunday) to 7 (Saturday), from //date//.
+.
+\\
+=====Arguments=====
+^Argument^Type^Description^
+|date|Date or Number (date serial)|An expression representing a date.  The date value to derive the weekday number from.|
+**Return value type:** Number
+\\
+=====Remarks=====
+The //date// argument can take any value or expression that evaluates to a date serial value.  Examples include:
+  * A date string:  #2019-12-12
+  * A date serial value: 43811 (the date serial for "2019-12-12")
+  * A date value created using any of the Date/Time functions that returns a date serial value.
+\\
+=====Examples=====
+  weekday(42097)  //Returns 6  (42097 is equivalent to Friday, 2015-04-03.)
+  weekday(35640)  //Returns 3 (35640 is equivalent to Tuesday, 1997-07-29.)
+  weekday(#2014-01-01)   //Returns 4 (Wednesday)
+\\
+=====See also=====
+  * [[syntax:functions:day|Day(date)]]
+  * [[syntax:functions:makedate|MakeDate(year, month, day)]]
+  * [[syntax:functions:month|Month(date)]]
+  * [[syntax:functions:weekdayname|WeekdayName(date)]]
+  * [[syntax:functions:year|Year(date)]]