Question

the point in the sky directly above your head at any given time is called the zenith. celestial apex. nadir. horizon point. celestial pole.

Explanation:

The zenith is defined as the point in the sky directly above an observer's head. The celestial apex is related to the Sun's motion relative to nearby stars, the nadir is the point directly below, the horizon - point is on the horizon, and the celestial pole is related to the Earth's axis of rotation extended into space.

Answer:

zenith.