IAO 2015, Наблюдения — Задача 8. The Moon.

XX International Astronomy Olympiad, Kazan, Tatarstan, Russia, 15–23.X.2015 · 15 октомври 2015 г.

Условие

You have 3 minutes to read the problem.
Then accelerated animation of the Moon's motion will be shown twice during 4 minutes.
Moreover at the 2nd time the animation will be paused at the beginning and at the end.
After that you will have 2 minutes to write an answer.
Find out the month of the observation.

Решение

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Оригинал в Архива: obs_p1.pdf