CREATE TABLE table_56063 ("Round" TEXT, "Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Attendance" FLOAT, "Report" TEXT)

On what Date was the Opponent Panathinaikos?
SELECT "Date" FROM table_56063 WHERE "Opponent" = 'panathinaikos'
SELECT "Date" FROM "table_56063" WHERE "Opponent" = 'panathinaikos'