CREATE TABLE table_15731 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Record" CLOB)

On what date did they have a record of 12-17?
SELECT "Date" FROM table_15731 WHERE "Record" = '12-17'
SELECT "Date" FROM "table_15731" WHERE "Record" = '12-17'