Calculate Gregorian dates for Rosh Hashanah, Yom Kippur, Passover, Hanukkah, and other major Jewish holidays using the Hebrew calendar.
About the Hebrew calendar
The Hebrew (Jewish) calendar is a lunisolar calendar used for Jewish religious observance. It tracks both the lunar cycle and the solar year through a 19-year cycle of common and leap years.
Dates shown are the Gregorian dates on which each holiday begins at sunset. Observance begins at sunset on the evening before the date shown.
Major holidays in 2026
Other observances
About these dates
Observance begins at sunset on the evening before the date shown. Holiday lengths vary: Passover is observed for seven days in Israel and eight days in the Diaspora; Hanukkah lasts eight days; most other holidays listed are one or two days.
Yom HaShoah, Yom HaAtzmaut, and Lag BaOmer are modern observances. Simchat Torah is celebrated on 23 Tishrei outside Israel and on 22 Tishrei (Shemini Atzeret) in Israel.
Also in Religious Holidays
Dates & Time
Calculate Gregorian dates for major Jewish holidays in any year using the deterministic Hebrew calendar algorithm.
The Hebrew calendar is a lunisolar system with months based on lunar cycles and leap months added in a 19-year Metonic cycle. This calculator uses the molad (new moon) calculation with the four postponement rules to determine Rosh Hashanah, then derives all other holidays by fixed offsets within the Hebrew year.
In the Hebrew calendar, days begin at sunset. The dates shown represent the Gregorian date on which the holiday begins at sunset. Observance continues through the following day.
Frequently asked questions
The Hebrew calendar is lunisolar, so its months track the moon while the year tracks the sun. Leap months are added periodically, causing Gregorian dates to shift.
The four dehiyot ensure Rosh Hashanah does not fall on certain days of the week and prevent the year from having an invalid length. They can delay Rosh Hashanah by one or two days.
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