Jewish Holidays 2.0 - This Newton OS 2.0-only application adds the top nine Jewish Holidays to your Newton calendar for any year from now until 2001.  Just check the years for which you want to add Jewish Holidays and tap the "Add" button.  Removing the holidays for any year is just as easy as tapping the "Remove" button. The program won't let you add holidays twice or remove holidays that you already deleted.  Version 2.0 adds support for European date formats allowing use of Jewish Holidays in the U.K. and Germany. The following holidays are included Rosh Hashanah, Yom Kippur, Sukkot 

Shemini Atzeret/Simchat Torah, Hanukkah, Purim, Pesach (Passover), Last two days of Pesach (Passover), Shavuot.