The fourth volume of “Classical Astrology” opens a kind of “meeting within a meeting” - this and the two subsequent volumes will be devoted to a detailed description of the planets. According to astrological tradition, our star, the Sun, is also considered a planet. This volume is dedicated to the Sun and Moon - the two most important planets in the horoscope. The chapters of the book are devoted to the characteristics of these planets in the signs of the Zodiac and houses. The section dedicated to the Moon also provides characteristics of lunar days; separate pages are devoted to the topic closest to the author - “The Moon and Diseases.” Solar and lunar eclipses are highlighted in a special chapter. The Appendices contain: characteristics of the seven cosmobiological periods, favorable and unfavorable days for various types of activities according to the moon, author's tables. Since some topics in this volume, especially in the part characterizing the Sun, echo the sections of previous volumes (“Zodiac Signs”, “Ascendant in Signs”) Zodiac"), some tables are repeated in the Appendix for convenience. The text also contains inevitable repetitions, without which understanding the text in its entirety would be difficult.