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Returns a number representing the day of the week of the date provided.
date- The date for which to determine the day of the week. Must be a reference to a cell containing a date, a function returning a date type, or a number.
type- [ OPTIONAL -
1by default ] - A number indicating which numbering system to use to represent weekdays. By default counts starting with Sunday = 1.
1, days are counted from Sunday and the value of Sunday is 1, therefore the value of Saturday is 7.
2, days are counted from Monday and the value of Monday is 1, therefore the value of Sunday is 7.
3, days are counted from Monday and the value of Monday is 0, therefore the value of Sunday is 6.
TO_DATE, or a date serial number of the type returned by the
WEEKDAYdoes not autoconvert number formats. Therefore,
WEEKDAY(10/10/2000)is interpreted as
WEEKDAY(0.0005), the quotient of 10 divided by 10 divided by 2000.
WEEKDAYreturns the day of week in numeric form, not as a letter (e.g. 'M' or 'F') an abbreviation (e.g. 'Tue' or 'Thu') nor as a full day name (e.g. 'Wednesday'). To get the name of the weekday, use the
TEXTfunction or change the number formatting on the cell.
YEAR: Returns the year specified by a given date.
TO_DATE: Converts a provided number to a date.
N: Returns the argument provided as a number.
MONTH: Returns the month of the year a specific date falls in, in numeric format.
DAY: Returns the day of the month that a specific date falls on, in numeric format.
DATEVALUE: Converts a provided date string in a known format to a date value.
DATE: Converts a provided year, month, and day into a date.
TEXT: Converts a number into text according to a specified format.