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Formula (Extended): $WEEKDAY Function

Overview

Find the day of the week corresponding to a date.

Syntax

$WEEKDAY(Date,[Weekly Basis])

Parameters

Parameter Type Required Description
Date Date or date string in yyyy/mm/dd format Required
[Weekly Basis] Half-width numeric value between 1 and 3 and 11 and 17 Optional Determine the range of the return value according to the value set. If omitted, 1 is assumed to be set.
1: Return an integer in the range 1 (Sunday) to 7 (Saturday)
2: Return an integer in the range 1 (Monday) to 7 (Sunday)
3: Return an integer in the range 0 (Monday) to 6 (Sunday)
11: Return an integer in the range 1 (Monday) to 7 (Sunday)
12: Return an integer in the range 1 (Tuesday) to 7 (Monday)
13: Return an integer in the range 1 (Wednesday) to 7 (Tuesday)
14: Return an integer in the range 1 (Thursday) to 7 (Wednesday)
15: Return an integer in the range 1 (Friday) to 7 (Thursday)
16: Return an integer in the range 1 (Saturday) to 7 (Friday)
17: Return an integer in the range 1 (Sunday) to 7 (Saturday)

Column Usable as Parameters

Parameter Classification Numeric Value Date Description Check
Date Yes No Yes Yes No
[Weekly Basis] Yes Yes No Yes No

Return Value

An integer in the range of 1 to 7 or 0 to 6.

Return Value Display Content

Target Display Content of Return Value
Classification (including title, status, manager, owner) Display return value. In the case of a drop-down list with values, the options that match the return value are displayed.
Numeric Value (including work volume, progression rate, remaining work volume) Display return value
Date (including start, completion) Do not display
Description (including content) Display return value
Check (including lock) Do not display

Usage Example ①

Specify the parameter by screen column name (name displayed).

Formula

Formula using the $WEEKDAY function in usage example 1

Parameters

Parameters specified in usage example 1 of the $WEEKDAY function

Calculation Result

Calculation result of usage example 1 of the $WEEKDAY function

Example of use ②

Specify parameters by screen item name (name displayed). The parameter [Weekly Basis] is also specified.

Formula

Formula using the $WEEKDAY function in usage example 2

Parameters

Parameters specified in usage example 2 of the $WEEKDAY function

Calculation Result

Calculation result of usage example 2 of the $WEEKDAY function