The loveliest Sun/Moon aspect is Trine. The disclaimer for that blanket statement is, “There are so many variables in a person, that we cannot categorically state any one thing as a perpetual fact.” In spite of that disclaimer, we like having trines in our charts.
If your Sun and Moon are both in the same Element, they are trine - 120˚. That means your personal Center-Self and your Soul-Self are compatible. In other words, being in your own skin is a fit, because your goals and your memories are synced into the same Element.
I have the lucky aspect of Gemini Sun trine Libra Moon. That means I have a easy time of making myself feel Ok with logical thought and polite interactions. Even when I have gone mad, I found it comforting to learn about subjects that seemed worthy of my interest. When feeling down, wrong or bad, I can redecorate the world in my mind; add positive thoughts, and better my situation just like that! I can manipulate my mood with new information (learning) to master (Libra) my thought (Gemini) processes. Being aware of these skills gives me the power I need to feel comfortable in the world; to trust life. Sun trine the Moon is a gift to be cherished.
The air signs are Gemini, Libra, Aquarius. Any combination of those three Elements will work this way. Sun in Libra, Moon in Gemini. Sun in Aquarius, Moon in Libra. Air represents creation through pure thought. You can mix and match because they are all yang/masculine. Air is “word”. Air is concept; unreal. It connects with ideas. It is not touchy-feelie. As for words, they often will not shut up! Air cuts away the dross to find the idea inside. Like Michelangelo said, “I cut away the parts that are not The David, and there he is, inside the stone. I allow him to emerge.” I paraphrase.
Fire is most difficult to define with words. Much easier to watch than to discuss. An Aries Sun trine Sagittarius or Leo Moon person would have the ability to move about, through his desire nature with total freedom. I use the masculine pronoun because the fire signs are yang/masculine. They take action without thought. Aries Sun becomes his true self when he is in motion, and his Sagittarius Moon resolves feeling by striving ahead into the unknown, searching for answers. Adventure and self-realization would be natural for this person. The fire signs are Aries, Leo, Sagittarius.
A Taurus Sun/ Virgo/Capricorn Moon person finds herself in practical ways. Her Taurus Sun requires certain values. Her desire is to acquire. Her Virgo Moon defines the value of her searches, quantifies, describes and remakes the things that she has acquired. She makes from experience. She wants to “see it to believe it”. She is grounded in reality. She likes diamonds because they represent security. She enjoys life. Her senses are the most acute of all. She learns through touch, taste, sound and most of all - Smell. Aroma is the language of Earth. She speaks it fluently. She is a kinetic learner. Talk does not impress her. She says, “Walk your talk.” The earth signs are Taurus, Virgo, Capricorn. Earth is yin/feminine.
The water signs are Cancer, Scorpio, Pisces. Water-sign natives are complicated. Water is clethonic, informed, dripping with context from days gone by. Water contains all that is. Every drop of water is a Universe with fully formed data from DNA and Epigenetics. Water is the Newborn and the Grim Reaper. Water is the Tender Mother and the Jack the Ripper. We understand through the water in our bodies. Water conducts knowledge and experience through the blood in our bodies. Water is deep and shallow, wide and narrow. Water is refreshing and tepid. Water informs memory and takes on our impressions. Water is the mirror in which we feel ourselves. Water is the Universal Solvent. She has dissolved All That Is, and owns it. Water is yin/feminine.
The Sun and the Moon are a team. If they are at odds, like a square or opposition, the person will find it troublesome or challenging to feel comfortable in their own skin. They must work for their peace and harmony. This can mean that those natives are more appreciative than their Trine fellows. You see, everything in creation has its Other Side. If comfort is natural to you, then you make take it for granted. Maybe, you are insensitive to the troubles of others because of your lack of struggle in that area. Maybe, you can’t relate to certain types of issues because those struggles are foreign to you.
No matter the element, Sun Trine the Moon gives a person confidence and faith in themselves. I know that “things will work out.” I am confident about that. No matter how freaked out or hysterical, animated or dejected, I always think my way through, and I know I can think my way through.
There is no right or wrong way to figure these things out, like I do. I figure. As you can see, there are many ways - to do it, to feel it, to dream it, to see it. They are all valid pathways to discovery. And remember, the things we discover are always ourselves.