Why, for any location on the surface of Mars, its satellites spend more time below the horizon than above the horizon?

Due to the fact that the satellites are close to the surface of the planet, a smaller part of the orbit is always above the horizon. For an observer on the surface, the satellites pass through the visible part of the orbit with a greater angular velocity. In the polar regions, the satellites of Mars are not visible at all.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.