Jewish Holidays 2025 2025 Rosh Hashanah. 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. Rosh hashanah, the jewish new year, marks the beginning of the jewish calendar year.

ראש השנה ), (literally “head of the year”), is the jewish. Rosh hashanah in 2025 will start on tuesday, the 23rd of september (23/9/2025) and will continue for 2 days until wednesday, the 24th of september.