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  • Characteristics of the weeks
  • Special cases
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Stored procedures
Returns the week number in the year corresponding to the specified date (this date is an integer).
Versions 16 and later
Universal Windows 10 App This function is now available for the Windows Phone applications.
New in version 16
Universal Windows 10 App This function is now available for the Windows Phone applications.
Universal Windows 10 App This function is now available for the Windows Phone applications.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Example
IntegerToWeekNumber(DateToInteger("20011225")) // Returns 52
Syntax
<Result> = IntegerToWeekNumber(<Date>)
<Result>: Integer
Number of the week (between 0 and 53) corresponding to the specified date.
<Date>: Integer
Number of days passed since January 1st 1800 + 1 (can be obtained by DateToInteger).
Remarks

Characteristics of the weeks

A weeks starts on a Monday and ends on a Sunday.
For the first days of the year:
  • If the first day of the year is a Friday, Saturday or Sunday, the week number will be 0. The week #1 will correspond to the first Monday of the year.
  • If the first day of the year is a Monday, Tuesday, Wednesday or Thursday, the week number will be 1.
  • The days found between the Sunday of the 52nd week and January 1st are part of week 53.
Universal Windows 10 AppJava

Special cases

The week number cannot be retrieved for the dates earlier than October 14th 1582 (the change from the Julian calendar to the Gregorian calendar will not be taken into account).
Component : wd240std.dll
Minimum version required
  • Version 9
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