Hello all,
           Is there any way to obtain the current difference in hours between a local time and GMT time?(ie asking the computer's system clock).

This difference is not always the same because of the daylight savings time.

In spanish case:
Standard Time = GMT+1
Summer Time = GMT+2

Ive been looking at XPATH 2.0 functions and Ive found the following

one:

fn:add-timezone-to-date( date $srcval) => date

I try it but it didnt work, the error message said:
Unknown system function.

I really appreciate your help.

Tomi