CREATE TABLE table_35579 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Record" CLOB)

On what date was the record 39 54?
SELECT "Date" FROM table_35579 WHERE "Record" = '39–54'
SELECT "Date" FROM "table_35579" WHERE "Record" = '39–54'