Sorry, I couldn't find pricing data for that day. The closing price for the Dow Jones Industrial Average (DJI) on August 20, 1982 was $869.29. It was up 3.4% for the day. The latest price is $45,982.55.
DATE
OPEN
HIGH
LOW
CLOSE
August 20 1982
$840.84
$871.19
$840.84
$869.29
Daily pricing data for the Dow Jones Industrial Average dates back to 1/2/1950, and may be incomplete.