guess the last Friday in March at 00:00
Rule Palestine 2015 max - Mar lastFri 24:00 1:00 S
Thanks for the heads-up. I see that timeanddate.com also says Palestine's fall 2014 change was Oct 24, not Sep 26 as predicted earlier. I installed the attached patch to the github experimental version of the tz database to make it agree with timeanddate on both points.
This means we should generate a new tz release before March 28 (hopefully well before).