CREATE TABLE table_19707 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Record" TEXT, "Game Site" TEXT, "Attendance" FLOAT)

Who were all of the opponents when the date was November 12, 1978?
SELECT "Opponent" FROM table_19707 WHERE "Date" = 'November 12, 1978'
SELECT "Opponent" FROM "table_19707" WHERE "Date" = 'November 12, 1978'