A few years ago, he decided to try to determine the actual date of Christ's Crucifixion using purely scientific methods. He wrote a computer program that factored in all the astronomical data he could unearth from the time. Then, because the Crucifixion is thought to have taken place 14 or 15 days after a crescent moon first became visible, he added in thousands of modern records of atmospheric haze to approximate periods of high and low visibility in the ancient Middle East.
Rolling back the calendar more than 1,900 years, he came up with two dates: AD 30 and 33.
Bible scholars, comparing biblical texts with historical records, have arrived at similar dates.
Thanks.