Rosh Chodesh May 2024 Cast. Rosh hashanah, the jewish new year, falls on the hebrew calendar dates of 1 and 2 tishrei. Start of month of iyyar on the hebrew.
When blessing the new month in the synagogue on the shabbat before rosh chodesh, it is customary to announce the time that the molad (birth of the new. It starts the jewish month.