All Jewish religious festivals and holidays (like Shabbat) are 24 hours long, starting the previous evening at nightfall and ending at nightfall. Jewish religious festivals fall on a different date every year.

Pesach (Passover)
April (starts with ‘Seder Night' festive meal)
Nothing with yeast or which is ‘leavened' is allowed all week - that includes bread and beer, first and last days are public holidays.
Throughout the city

Israel Independence Day
May
Celebrations of the declaration of the State of Israel in 1948.
Throughout the city

Israel Festival
May-June
Major cultural events.
Various city venues

Yom Yerushalayim (Jerusalem Day)
June
Celebrations of the 1967 reunification of the city.
Throughout the city

Jerusalem Film Festival
July
Cinematheque
Website: www.jff.org.il

Hutzot Hayotzer
August
Jerusalem's big annual arts, crafts and folklore festival.
Opposite David's Tower

Rosh Hashanah (Jewish New Year)
Two days in September/October
Throughout the city

Yom Kippur (The Day of Atonement)
10 days after Rosh Hashanah
Solemn religious fast day.

Sukkot (Feast of Tabernacles)
October
Throughout the city