Rosh Hashanah 2025 Jewish Calendar. Literally translated as “head of the year,” rosh hashanah marks the first day of the hebrew month tishrei and the beginning of the jewish calendar year, set by the lunar cycle,. In 2025, rosh hashanah begins at sundown on monday, sep.

Join cantor labow in this exploration of the fundamentals of judaism. 2 and ends at sundown on friday, oct.