You asked about two years of days mentioned in Gen.41:1. It is also used in
Gen.8:22, 2 Samuel 13:23, 2 Samuel 14:28, and Jeremiah 28:3 and 11. A month
of days is used in Gen 29:14, Deuteronomy 21:13, and 2 Kings 15:13.
Three weeks days or of days is used in Daniel 10:2-3.