The Scripture does not indicate.
How many days did GOD blind Saul/Paul?
Romans 1:26-27 (King James Version)
For this cause God gave them up unto vile affections: for even their women did change the natural use into that which is against nature:
And likewise also the men, leaving the natural use of the woman, burned in their lust one toward another; men with men working that which is unseemly, and receiving in themselves that recompence of their error which was meet.
Do you agree that all are blind and all are lost before they acccept Christ, or are some of them saved already because God knows they will eventually believe?
"And Saul arose from the earth; and when his eyes were opened, he saw no man: but they led him by the hand, and brought him into Damascus. And he was three days without sight, and neither did eat nor drink". (Acts 9:8,9).
Why didn’t GOD choose Reuben to reveal his light, instead of Saul/Paul? they were both hostile Pharisees twoards Christians...GOD knows who is open to his word and truth.