For the Jews, the Jewish New Year is known as Rosh Hashanah. It is a two day celebration which begins in the first day of Tishrei. The day of Tishrei is a believed to be the anniversary of the creation of Adam and Eve.
Yom Kippur , also known as Day of Atonement, is the holiest day of the year for the Jewish People. Its central themes are atonement and replacement. Jewish people traditionally observe this holy day with an approximate 25-hour period of fasting and intensive prayer, often spending most of the day in synagogue services.
Chanukah, also known as the Festival of Lights and Feast of Dedication, is an eight-day Jewish holiday commemorating the rededication of the Holy Temple (the Second Temple) in Jerusalem at the time of the Maccabean Revolt against the Greeks of the 2nd century BC. Hanukkah is observed for eight nights and days, starting on the 25th day of Kislev according to the Hebrew calendar, which may occur at any time from late November to late December in the Gregorian Calendar.