Photos: Rosh Hashanah 2013 - CNN.com Orthodox Jewish men pray at the Western Wall, Judaism's holiest prayer site, in Jerusalem's Old City on Wednesday, September 4. Rosh Hashanah, the Jewish New Year, starts at sundown on Wednesday and runs through Friday, September 6. It is a time for reflection and repentance that leads up to Yom Kippur, the day of atonement.