Any, except for Mercury and Venus, that is, it could be one of the outer planets – Mars, Jupiter, Saturn, Uranus, Neptune. On September 23, the Sun is near the autumnal equinox. This means that the planets “observed in the vicinity of the point of the summer sun of standing will be located at an angular distance from the Sun of the order of 90 ° (ie, in quadrature). In this position relative to the Sun from the Earth, only the outer planets can be observed.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.