Q: WHAT YEAR WAS JOSEPH BORN?
A: IT DEPENDS WHAT CALENDAR YOU ARE USING!
On the Gregorian calendar (the one you might have on your wall) the year was 1782 BC.
On the Hebrew calendar, sometimes called the biblical calendar, the year was 2265 AM.
Joseph’s birth breaks down as follows: The 7 years of plenty plus 2 years of famine = Joseph being 39 when Jacob came before Pharaoh at the age 130. 130-39 = Jacob being 91 at Joseph’s birth.
22 And it happened, when Israel dwelt in that land, that Reuben went and lay with Bilhah his father's concubine; and Israel heard about it. Now the sons of Jacob were twelve:
23 the sons of Leah were Reuben, Jacob's firstborn, and Simeon, Levi, Judah, Issachar, and Zebulun;
24 the sons of Rachel were Joseph and Benjamin;
Genesis 45:6 For these two years the famine has been in the land, and there are still five years in which there will be neither plowing nor harvesting.
This was also Jacob's 14th Year of service to Laban.