DateToDay (Function)

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Date and time management functions

See also

DateToDay (Function)

In french: DateVersJour

Returns the day that corresponds to a given date.

Versions 15 and later

This function is now available for Android applications.

New in version 15

This function is now available for Android applications.

Versions 16 and later

This function is now available for Windows Phone applications.

New in version 16

This function is now available for Windows Phone applications.

Versions 17 and later

This function is now available for iPhone/iPad applications.

New in version 17

This function is now available for iPhone/iPad applications.

Versions 18 and later

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

New in version 18

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

Versions 21 and later

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Universal Windows 10 App mode.

Versions 25 and later

This function is now available in browser code.

New in version 25

This function is now available in browser code.

Versions 26 and later

This function is now available for Apple Watch applications.

New in version 26

This function is now available for Apple Watch applications.

Example

DateToDay("20011225") // Returns 2
IF DateToDay(DateSys()) > 5 THEN
Info("It's the weekend")
END

Syntax

<Result> = DateToDay(<Date>)

<Result>: Integer

Number corresponding to the day of the week for the specified date:
1 - Monday
2 - Tuesday
3 - Wednesday
4 - Thursday
5 - Friday
6 - Saturday
7 - Sunday

<Date>: Character string, Date or DateTime variable

Date to use. This date can correspond to:
a character string in YYYYMMDD format (YYYY corresponds to the year, MM to the month and DD to the day).
Versions 24 and later
a character string in YYYYMMDDHHmmSSCC format (YYYY corresponds to the year, MM to the month, DD to the day, HH to hours, mm to minutes, SS to seconds and CC to hundredths of a second (use CCC for thousandths of a second)). In this case, only the date is taken into account.
New in version 24
a character string in YYYYMMDDHHmmSSCC format (YYYY corresponds to the year, MM to the month, DD to the day, HH to hours, mm to minutes, SS to seconds and CC to hundredths of a second (use CCC for thousandths of a second)). In this case, only the date is taken into account.
a character string in YYYYMMDDHHmmSSCC format (YYYY corresponds to the year, MM to the month, DD to the day, HH to hours, mm to minutes, SS to seconds and CC to hundredths of a second (use CCC for thousandths of a second)). In this case, only the date is taken into account.
a Date variable.
Versions 24 and later
a DateTime variable. In this case, only the date is taken into account.
New in version 24
a DateTime variable. In this case, only the date is taken into account.
a DateTime variable. In this case, only the date is taken into account.

Remarks

The date storage format allows you to store dates from 01/01/0001 to 12/31/9999.

The calculations performed on dates by the WLanguage functions or by the WLanguage properties are accurate from January 1st 1583.

Related Examples:

Unit examples (WINDEV): Management of dates

[ + ] Using the Date type of WLanguage and the functions for handling dates.

Business / UI classification: Neutral code

Component: wd270std.dll