CREATE TABLE table_39068 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Game site" CLOB, "Record" CLOB, "Attendance" CLOB)

On what date was the result w 20-17?
SELECT "Date" FROM table_39068 WHERE "Result" = 'w 20-17'
SELECT "Date" FROM "table_39068" WHERE "Result" = 'w 20-17'