CREATE TABLE table_72031 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Record" CLOB)

On what day was the record 30-31?
SELECT "Date" FROM table_72031 WHERE "Record" = '30-31'
SELECT "Date" FROM "table_72031" WHERE "Record" = '30-31'