asterisk users - Sep 2008 - GotoIfTime and timezone specification

Hi!

Is it possible to specify the timezone in the GotoIfTime application?

E.g. I want to route the call if it is "9:00-10:00 in Austria/Vienna"
or
  "10:00 - 11:00 in New York".

This is needed for example if the time based routing for the office in 
New York is done on an Asterisk server running another timezone.

regards
klaus