Hi Dariusz,
   XSLT 2.0 has following function to do date
arithmetic you wish ..

fn:subtract-dates-yielding-yearMonthDuration(
dateTime? $operand1, dateTime? $operand2) 
(
yearMonthDuration?

Regards,
Mukul

--- Dariusz Borowski <d.borowski@xxxxxx> wrote:

> Hi There!
> 
> I'm new hear and I would like to know, if anybody
> knows how to count date.
> 
> I need delta-dates of two dates.
> 
> The date-format is as follow: "2005-05-01" and
> "2005-06-01"
> 
> Now we have here a delta of "1 month".
> 
> How can I get a result like this in xsl???
> 
> Thanks!
> Dariusz
>
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