When Is Rosh Hashanah 2025. Rosh hashanah 2025, (the jewish new year), begins on monday evening, september 22 at sunset and ends in the evening of wednesday, september 24. Rosh hashanah 2025 starts on sundown of monday, september 22nd ending the 2 day celebration at sundown on wednesday, september 24, celebrating the jewish new year beginning on the first day of the seventh.
Rosh hashanah covers two days (first day is called tishrei) which is part of the 10 high holy days which concludes with yom kippur. It is the anniversary of the creation of adam and eve, and a day of judgment and coronation of g‑d as king.