Rosh HaShana is a Jewish holiday that marks the beginning of the New Year on the first and second day of Tishri. It is celebrated because the start of the New Year is important to Jews, as many important events in people's lives begin at the new year. On Rosh HaShana, no work is allowed and people go to synagogue, eat apples and honey for a sweet new year, and throw bread in rivers to cast off sins.