The Jewish community around the world will be observing Yom Kippur on Friday beginning at sundown. It’s the holiest day on the Jewish calendar and it’s a 25 hour period of repentance. The Day of Atonement is marked by fasting, prayer, asking forgiveness for sins from the past year and taking steps toward self-improvement for the year ahead. Families and friends will gather on Saturday at sundown to break the fast.