Question

On the 20 March, what is the maximum altitude of the Sun above the horizon, seen from a city which is (6◦ E, +52◦ N), 9◦ west of the centre of the Central European time zone?

Answer 1

On March 21, the Sun is at the zenith and its altitude above the horizon is 90°. On June 21, the Sun is 23° north of the celestial equator and its altitude above the horizon will be 67°.

Step-by-step explanation:

On March 21, the Sun is at the zenith at noon, which means its altitude above the horizon is 90°. On June 21, the Sun is 23° north of the celestial equator, so its altitude above the horizon will be 23° less than the altitude of the zenith, which is 90° - 23° = 67°.