Yahrtzeit of Aaron (1395-1272 BCE), the elder brother of Moses and the first High Priest of Israel. Aaron was a great prophet and righteous man, who was known for bringing peace between people. During the period of Jewish slavery in Egypt, Aaron accompanied Moses in deliberations with Pharaoh. After the giving of the Torah, when Moses spent 40 days on Mount Sinai and the people became impatient, Aaron worked to minimize damage from the building of the Golden Calf. All Kohanim in history are descended from Aaron; indeed, DNA research in recent years supports this tradition.