There seems to be some differences between the encoding of the Palestine Rule in he TZ database with Steffen Thorsens website. If Steffen is taken as authority, the following changes should be made: -Rule Palestine 2006 only - Sep 22 0:00 0 - +Rule Palestine 2006 only - Sep 22 2:00 0 - -Rule Palestine 2006 2008 - Apr 1 0:00 1:00 S +Rule Palestine 2006 2007 - Apr 1 0:00 1:00 S -Rule Palestine 2009 max - Mar lastFri 0:00 1:00 S +Rule Palestine 2008 max - Mar lastFri 0:00 1:00 S -Rule Palestine 2009 max - Sep lastMon 2:00 0 - +Rule Palestine 2009 max - Sep lastMon 0:00 0 - The last rule change is especially controversial, since it has not happened yet and we only have a non-authoritative web article to support this. Actually I would say the Olson guess seems more likely from my own subjective view, but we may not care yet when there is no authoritative information. Regards, Jesper Nørgaard Welen