Rosh Hashanah 2025 Jewish Calendar Year End. Rosh hashanah, the jewish new year, and yom kippur, the day of atonement, form the high holidays, also known as the days of awe. The jewish calendar is both solar and lunar, consisting of 12 months of either 29 or 30 days.

Rosh hashanah 2025 starts on sundown of monday, september 22nd ending the 2 day celebration at sundown on wednesday, september 24, celebrating the jewish. Sun, 29 tamuz 5784, 4 august 2024.