Q: WHAT YEAR WAS TERAH BORN?
A: IT DEPENDS WHAT CALENDAR YOU ARE USING!
On the Gregorian calendar (the one you might have on your wall) the year was 2163 BC.
On the Hebrew calendar, sometimes called the biblical calendar, the year was 1884 AM.
Genesis 11:24 - And Nahor lived nine and twenty years, and begat Terah