Forgetful? Some of us are elephants who never forget, and some of us would forget our heads if they weren't attached The best, longest memories go to Capricorn/Saturn/10th house and Cancer/Moon/4th house. Multiple planets in these signs or houses, or a prominent Saturn or Moon (like conjunct the Sun, in the 1st house, on an angle, a singleton) can show you have a better memory, especially long -term memory. With Cancer, the 4th house, and the Moon, it's especially if something impacts you emotionally. It's hard to forget anything then.
Short-term memory is ruled by Gemini, Mercury, and the 3rd house. Multiple planets in Gemini or the 3rd house or a prominent Mercury can show a good short-term memory. BUT this trio can also leave you scatterbrained, so you forget things very quickly.
Saturn, the Moon, Mercury, or 3rd, 4th, or 10th house cusps at a critical or anaretic degree can show difficulty with memory, forgetting everything, or taking in too much. Neptune in hard aspect to Saturn, Mercury, Sun, or Moon, in the 1st, 3rd, or 10th houses, or very prominent in the chart can also make memory difficult since Neptune rules illusion, delusion, and the mental fog that gets in the way or remembering things.
Mercury Retrograde in Aries: March - April 2018
March 2018 New & Full Moons
April 2018 New & Full Moons
Jupiter in Scorpio: October 2017 - November 2018
Saturn in Capricorn: December 2017 - March 2020, July - December 2020