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Convert between the Hebrew (Jewish) and Gregorian calendars with holiday detection
Rosh Hashanah (Jewish New Year) 5785 — 1 Tishrei 5785 — falls on the Gregorian calendar in autumn. This is one of the holiest days in Judaism, marking the beginning of the High Holy Days.
Passover 5785 — 15 Nisan 5785 — commemorates the Exodus from Egypt. It falls in spring on the Gregorian calendar and is celebrated for 7-8 days with special meals (Seders) and the eating of matzah.
Convert today's Gregorian date to its Hebrew equivalent. Find out what day it is on the Jewish calendar, whether it's a holiday, and what Hebrew year we are currently in.
The Jewish calendar is a lunisolar calendar used for Jewish religious observances, holidays, and rituals. It dates back thousands of years and counts from the traditional date of creation (anno mundi). The current Hebrew year is in the 5780s. Months follow the lunar cycle, while a leap year system keeps the calendar aligned with the solar seasons.
Unlike the Gregorian calendar which adds a day in leap years, the Hebrew calendar adds an entire month — Adar I (30 days). This happens 7 times in every 19-year cycle (years 3, 6, 8, 11, 14, 17, and 19). This keeps the lunar months aligned with the solar seasons, ensuring Passover always falls in spring.
The Hebrew calendar counts from the traditional date of the creation of the world (anno mundi), calculated from Biblical genealogies to be 3761 BCE. So the year 2025 CE corresponds approximately to Hebrew year 5785. This calculation was standardized by Rabbi Jose ben Halafta in the 2nd century CE in the work Seder Olam Rabbah.