Rosh Hashanah is the Jewish New Year that occurs in September or October and commemorates the creation of the world. It is a time of introspection, repentance, and prayer for a fruitful year. Major themes include it being a new year, day of judgment, day of remembrance, and day of the shofar. Rituals include blowing the shofar horn 100 times and tossing bread into bodies of water to symbolically cast away sins. Yom Kippur, the Day of Atonement, occurs ten days after and is the most important Jewish holiday. It is a solemn day of fasting and prayer seeking forgiveness, with white worn as a symbol of purity.