This book will not only replace your astronomical calendar and astronomical yearbook, but also provide basic knowledge of celestial mechanics and observation processing methods. You will find in it all the necessary information and ready-made software solutions for anticipating the positions of the Sun, Moon and planets, sunrises and sets of luminaries, physical ephemeris of the Sun and large planets, positions of comets and asteroids, phases of the Moon, circumstances of solar and lunar eclipses, coatings of stars by the Moon, calculation of orbit elements from three observations and much more.