What it means
Aries is a fire sign and a cardinal sign, which means it likes to start things. Its symbol is the ram, an animal that meets obstacles head on. Mars, its ruler, is the planet of drive and assertion, so an Aries Sun often feels most alive when there is something to begin, win or fix right now. The Codex calls Aries the pioneer of the zodiac: its purpose is to initiate action and lead with boldness. It tends to shine when it is breaking new ground and acting on its own terms. In daily life that can look like the friend who signs up first and says the awkward thing out loud.
Strengths
Courage, initiative, honesty, fast decisions, and the nerve to go first when others hesitate.
Challenges
Impatience, a short fuse, starting more than it finishes, and treating every disagreement as a contest.
Dates
The Sun moves through Aries from about March 21 to April 19. The exact dates shift by a day or so from year to year, so if you were born near either edge, your birth time and place decide which sign your Sun is in. A free blueprint calculates it exactly.
How Cosmic Array reads it
Your Sun is one part of the chart, not the whole of it. The Moon and Rising sign change the picture: an Aries Sun with a Cancer Moon may charge ahead in public and then need quiet time at home to sort out how it all felt. Cosmic Array also reads your Sun against your numerology and Human Design, and where they pull in different directions, the blueprint names that tension instead of picking one side.