Find for Petrograd the highest and lowest in the year the height of the Sun, the highest and lowest azimuth of the rising
Find for Petrograd the highest and lowest in the year the height of the Sun, the highest and lowest azimuth of the rising and setting of the Sun in the year.
The highest height of the Sun in a year will be when it is in the Tropic of Cancer; therefore, having imagined the Sun in the Tropic of Cancer, with the help of this planisphere we find that the highest height of the Sun in Petrograd in the year is 54њ.
The lowest height of the Sun will be when it is in the Tropic of Capricorn; from this we obtain with the help of the celestial planisphere that the lowest height of the Sun in Petrograd in a year is 6њ.
The greatest azimuth of sunrise in Petrograd will be 144њ, and the smallest -34њ.
Thus, during the year the sunrise and sunset in Petrograd will be observed at points on the horizon between points with azimuths 34њ and 144њ.
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