Как будет по 7.00 ,7.30,8.00,9.00,13.00,18.00,17.00 и 21.00

Seven o'clock( a.m).;half past 7 (a.m); eight o'clock( a.m.); 1 o'clock (p.m); six o'clock (p.m); five o'clock (p.m); nine o'clock (p.m)