When Is Erev Rosh Hashanah 2025. Rosh hashana for hebrew year 5785 begins at sundown on wednesday, 2 october 2025 and ends at nightfall on friday, 4 october 2025. Rosh hashanah 2025, which ushers in the jewish year 5785, starts just before sundown on wednesday, oct.

Rosh hashanah, the jewish new year, falls on the hebrew calendar dates of 1 and 2 tishrei. 2, 2025, and ends after nightfall.