The Life of Aaron

• Aaron

• Start — Exodus 7:7. The year of Aaron's birth is the year of the Exodus (2515) - his age when he spoke with Pharaoh just before the Exodus (83) = 2432
• End — Numbers 33:39. The year of Aaron's death is the year he was born (2432) + his age at death (123) = 2555

Aaron was 83 when they spoke with Pharaoh at the time of the Exodus so Aaron was born 83 years before the Exodus.

Years are anno hominis — counted from Creation as year 1 — which is the frame the source computes in. The arithmetic behind each boundary is given above rather than assumed.