Rosh HaShanah (literally, "Head of the Year") is the Jewish New Year, which marks the beginning of a 10-day period of prayer, self-examination and repentance. This period, known as the Yamim Noraim (Days of Awe or High Holy Days), is widely observed by Jews throughout the world, many with prayer and reflection in a synagogue. There also are several holiday rituals observed at home.
Rosh HaShanah is celebrated on the first day of the Hebrew month of Tishrei, which—because of differences in the solar and lunar calendar—corresponds to September or October on the secular calendar. Customs associated with the holiday include sounding the shofar, eating a round challah, and tasting apples and honey to represent a sweet New Year.
Yom Kippur means "Day of Atonement" and refers to the annual Jewish observance of fasting, prayer and repentance. Part of the High Holidays, which also includes Rosh HaShanah, Yom Kippur is considered the holiest day on the Jewish calendar. In three separate passages in the Torah, the Jewish people are told, "the tenth day of the seventh month is the Day of Atonement. It shall be a sacred occasion for you: You shall practice self-denial."(Leviticus 23:27). Fasting is seen as fulfilling this biblical commandment. The Yom Kippur fast also enables us to put aside our physical desires to concentrate on our spiritual needs through prayer, repentance and self-improvement.
Yom Kippur is the moment in Jewish time when we dedicate our mind, body, and soul to reconciliation with God, our fellow human beings, and ourselves. We are commanded to turn to those whom we have wronged first, acknowledging our sins and the pain we might have caused. At the same time, we must be willing to forgive and to let go of certain offenses and the feelings of resentment they provoked in us. On this journey we are both seekers and givers of pardon. Only then can we turn to God and ask for forgiveness: “And for all these, God of forgiveness, forgive us, pardon us, and grant us atonement.”