Yom Kippur is the holiest day in Judaism and Samaritanism. It occurs annually on the 10th of Tishrei. Primarily centered on atonement and repentance, the day's observances consist of full fasting and ascetic behavior accompanied by intensive prayer as well as sin confessions.
Diwali, or Dipawali, is India's biggest and most important holiday of the year. The festival gets its name from the row(avali) of clay lamps (deepa) that Indians light outside their homes to symbolize the inner light that protects from spiritual darkness. This festival is as important to Hindus as the Christmas holiday is to Christians.
All Hallows' Eve, or All Saints' Eve is a celebration observed in many countries on 31 October, the eve of the Western Christian feast of All Saints' Day.