sth like: angle_min = 360/60 x min angle_hrs = 360/12 x (hrs % 12) + 360/12 x (min / 60) angle_diff = angle_min - angle_hrs angle_diff = angle_diff >=0 ? angle_diff : -angle_diff // or angle_diff = abs(angle_diff) angle_diff = angle_diff >180 ? angle_diff = 360 - angle_diff : angle_diff