Jewish Holidays and the Ritual Calendar
Domain 5: Jewish holidays and the ritual calendar. The exam tests the fixed calendar, the meaning and practice of each festival, and the logic of counting and postponement.
Calendar rules
- Lunisolar; months begin with Rosh Chodesh; 19-year cycle with seven leap years, adding Adar II.
- Festivals: Pesach 15–22 Nisan; Shavuot 6 Sivan, the 50th day of the Omer; Sukkot 15–22 Tishrei; Rosh Hashanah 1–2 Tishrei; Yom Kippur 10 Tishrei; Chanukah 25 Kislev for eight days; Purim 14 Adar; Tisha B'Av 9 Av.
- Work prohibitions differ on Shabbat, yom tov, and chol ha-moed; Sefirat HaOmer counts 49 days.
- Ritual objects: shofar, lulav and etrog, matzah, seder plate, chanukiah, megillah.
Worked example
'When is Shavuot, and why can it not fall on just any day?' Count 49 days from 16 Nisan, the first Omer day; the 50th is 6 Sivan. Because 50 = 7×7 + 1, Shavuot falls on the day after the weekday of 15 Nisan. In the fixed calendar 15 Nisan is Sunday, Tuesday, Thursday, or Saturday, so Shavuot is Monday, Wednesday, Friday, or Sunday. Reasoning: show the counting, the arithmetic, and the calendar constraint. A weak answer says '50 days after Pesach' without the starting point.
Traps
- Confusing 15 Nisan (Pesach) with 16 Nisan (Omer start).
- Saying Chanukah is in the Torah; it is rabbinic.
- Mixing Rosh Hashanah (judgment) with Yom Kippur (atonement).
- Ignoring second-day diaspora observances.