any clockwise motion. The general day formula non-extreme axial tilt is P_rev x P_rot P_day = ---------------------- . P_rev - P_rot In the case of Venus , P_rot = -243.01 days and P_rev = 224.68 days. Thus 224.68 x (-243.01) P_day_Venus = ---------------------------- = -116.74 days . 224.68 - (-243.01) The