Jewish calendar calculators

Hebrew calendar estimates: Passover (Pesach) and Rosh Hashanah on the Gregorian calendar with Diaspora or Israel Passover length; live countdown from today with festival day counts. Holidays begin at sunset — confirm with your community calendar.

The Hebrew calendar is lunisolar: months follow the moon, but a leap month is added in seven years of every nineteen so that the festivals stay in their agricultural seasons. This is why Passover drifts within spring on the Gregorian calendar rather than wandering through the year as purely lunar dates do. Two conventions affect what these tools show. Jewish days begin at sunset, so a holiday listed for a given date actually starts the previous evening — an important detail when booking travel or requesting leave. And several festivals are observed for an extra day in the Diaspora compared with Israel, which is why Passover runs seven days in Israel and eight for many communities elsewhere; the tool lets you pick. Times of day depend on your local sunset, so confirm candle-lighting and precise timings with your community calendar.