Moon is conditional benefic because if close to the sun (within 72 degrees) it is considered malefic, if malefic then it destroys the effect of the bhava it owns. When Moon is malefic it can still give good results if placed with benefic. In the first 10 days it is childlike (Baal Avastha) and therefore does not give the desired result, for the next 10 days, it's in youth, therefore, gives good results, in the last 10 days it's like its state is old age or death, therefore, expecting good results is useless.
It's strong in Cancer, Taurus, on Monday, in its hora, when placed in its own drekana and hora, when aspected or conjunct a benefic. If all planets aspect are on the moon, it is considered to be a Raj Yoga. (says Varahmir in Brihat Jatak)
Moon
Nature- Dual, Gender – Female, Guna- Satva, Avastha- Youth and old age, Element-Water Color of the body -Fair, Mineral assigned- Blood, Taste – Salty, Deity – Apa, Time frame – Second, Direction- Northwest, Aspect – Neutral, Rises from – East or west, Strong- During the night, Season- Rainy, Time- Sunset ( evening), Activity area- Water bodies, Age -48 or 70, Area- Jungle, Ayan – Dakshina ( Southwards), Caste – Trader.
Diseases of the moon – (Pandu Rog) Anamnia, Diseases arising from water, (Kamla)severe anorexia or malaise, Acharyacharak, and Harita considered the disease as a type of the second stage of Panduroga. Acharyavaghbhat considered it a separate disease. Sexually transmitted diseases, Diseases due to the wrath of female deities.
