Yom Kippur- the Day of Atonement (Leviticus 23:27-32)
c 1877 BCE- Brit milah [circumcision] of Abraham at age 99, and his son Yishmael at age 13, took place [according to Pirkei D'Rabi Eliezer] (Genesis 17:23-24).
c 1839 BCE- The Akeida (sacrifice of Isaac in Genesis 22) [according to some].
c 1850 BCE- Birth of Rebecca, wife of Isaac, mother of Jacob and Esau, and one of the Four Matriarchs of Israel.
c 1476 BCE- Moses descended from Mount Sinai with the second Tablets 82 days after the
people of Israel betrayed their new covenant with G-d by worshipping the Golden Calf. (Exodus 34:28-29)
c 1031 BCE- G-d forgave King David over the incident with Bathsheba. (2 Samuel 12:1-16)
c 860 BCE- Zechariah, son of Jehoiada the priest, attempted to rebuke the people of Israel for forsaking the way of the LORD on a Shabbat Yom Kippur (2 Chronicles 24:20-21).
The people stoned him in the hall of the priests at the command of King Joash and he died. His blood boiled and bubbled on the grounds of the Holy Temple for 274 years until the destruction of the Temple (Kohelet Rabba 3:20).
c 573 BCE- Ezekiel the Prophet saw a vision in the 25th year of exile of Jehoiachin describing the appearance of the future (third) Temple (Ezekiel chapters 47- 48) and the future expanded
borders of the Land of Israel.
123- Rabbi Akiva was murdered by the Romans (see 5 Tishrei) for teaching Torah. On that day Rabbi Yehuda Hanasi was born (Kiddushin 72b).