Intikam, your coriolis effect experiment must be flawed then. Do this experiment - run water into your bathtub. Then pull the plug. Note which way the water spins. Repeat this several times, each time noting which way the water spins as it goes down the drain. You can even stick your finger in the drain and spin it the opposite way, and soon it will return back to its original direction of spin.
South of the equator the water will spin in the opposite direction.
Also, tornados and hurricanes all spin the same direction. The same direction as the water draining in your tub! Every single time.