Support for ISO 8601 Week Numbers

Looking at get-date, and the datetime object returned, it looks like
there is no support for ISO 8601 week numbers. :-(

ISO8601 is widely used in Europe and has a standard week numbering
(1=1st week, 2=2nd, etc).

This is an annoyance, especially given:
http://support.microsoft.com/kb/200299/en-us

I've been asked - is there any potential, or even any intention of
providing ISO8601 week number support into PowerShell?

Thomas
--
Thomas Lee
doctordns@gmail.com
MVP - Admin Frameworks and Security

"Thomas Lee" <tfl@psp.co.uk> wrote in message
news:7zlmWuVEPEDGFAvg@mail.psp.co.uk...
> Looking at get-date, and the datetime object returned, it looks like there
> is no support for ISO 8601 week numbers. :-(
>
> ISO8601 is widely used in Europe and has a standard week numbering (1=1st
> week, 2=2nd, etc).
>
> This is an annoyance, especially given:
> http://support.microsoft.com/kb/200299/en-us
>
> I've been asked - is there any potential, or even any intention of
> providing ISO8601 week number support into PowerShell?
>
> Thomas
> --
> Thomas Lee
> doctordns@gmail.com
> MVP - Admin Frameworks and Security

Try

>get-date -uFormat %W
12

>get-date -uFormat %V
13

n

In message <DD6597E7-4ABB-4A90-AB64-BF50B01047AF@microsoft.com>, Neil
Chambers <nospamplease@nospam.com> writes

>Try
>
>>get-date -uFormat %W
>12
>
>>get-date -uFormat %V
>13

Does this also have the bug noted in
http://support.microsoft.com/kb/200299/en-us??

--
Thomas Lee
doctordns@gmail.com
MVP - Admin Frameworks and Security

This doesn't return the correct week number for ISO 8601:

Get-Date "12/31/2007" -uFormat %V

Neither does this:

$cal = New-Object "System.Globalization.GregorianCalendar"
$dt = Get-Date "12/31/2007"
$woy = $cal.GetWeekOfYear( $dt, "FirstFourDayWeek", "Monday" )

Write-Host ("Date: " + $dt.ToString("D"))
Write-Host ("Week number: " + $woy.ToString())

The ISO Week Date Calendar
http://personal.ecu.edu/mccartyr/isowdcal.html