CREATE TABLE table_24115 ("Game" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Black Knights points" FLOAT, "Opponents" FLOAT, "Record" CLOB)

How many dates have boston college as the opponent?
SELECT COUNT("Date") FROM table_24115 WHERE "Opponent" = 'Boston College'
SELECT COUNT("Date") FROM "table_24115" WHERE "Opponent" = 'Boston College'