Yom Kippur (Judiasm)
Yom Kippur is the Day of Atonement and is the year's holiest day and a day of fasting. To re-establish oneness with God, Jews ask forgiveness and forgive others. Then can they confess their sins and ask God's forgiveness.
Rosh Hashanah (Judiasm)
Rosh Hashanah–New Year's Day, year 5773, and anniversary of the creation of the world. The first of the Ten Days of Awe (or Repentance).
Tish'a B'Av (Judaism)
Tish'a B'Av or Ninth month of Av, is a major fasting day commemorating the destruction of the First and Second Temples in Jerusalem in ancient times.
Yom HaShoah (Judiasm)
Yom HaShoah is held in memory of the six million Jews who died as victims of Nazi atrocities (World War II).