Rocme, a diurnal or nocturnal chart are important when we look at the rulerships of the triplicities. Some planets ruler a triplicity by day, others by night and Mars for instance rules the Water triplicity by night and day when in Pisces.
It does not matter if you are a man or a woman. You are what the ruler of your Ascendant shows. If it is Saturn, you are Saturn, if it is Mars, you are Mars, also when in real life you are a woman. It shows more the nature of the person than the gender. Moon for instance always co-rules the Ascendant, also if the querent is a man. It does not matter that Moon is feminin.
Also what happens if the quesited
(7th house relationship question) is cancer/moon.How can we both have the moon as significators
Very good question. In this case, the Ascendant is only ruled by the ruler of the sign on the Ascendant and not anymore by the Moon.
Another similar problem. Should Asc. and Quisited (lets say a child or an object) be ruled by the same planet as the one ruling the Ascendant (like Mercury on Asc. and Gemini on the cusp of the quisited) then you take the Moon only for yourself and give Mercury to the quisited, OR you can juggle a bit which is more an intuitive thing. When we have a feminin child, we could also take Venus for that child and Mars for a young male child. But I usually keep the Moon for the Quisitor and give the other planet to the quisited.