A natal chart reading is a conversation built around a map of the sky at the moment you were born. The astrologer calculates that map, interprets what the arrangement traditionally signifies, and talks it through with you — usually for an hour, usually about something you came in wanting to think about.
What the astrologer needs from you
Three things: your date of birth, your place of birth, and your time of birth as precisely as you can get it.
The time matters more than people expect. It determines the rising sign and the house positions, which are a substantial part of how a chart is read. An hour's difference changes the interpretation noticeably; a whole chart calculated from an estimated noon is read differently and a good astrologer will tell you so.
If you don't know your birth time, a birth certificate or a hospital record often has it. Some astrologers work with an unknown time and will explain what they can't address.
What the reading is like
Less mystical than people imagine, and more like a structured conversation.
The astrologer has usually prepared — looked at the chart, formed an impression, noted what stands out. The session itself is mostly them describing what they see and you responding, agreeing, pushing back, recognising something or not.
The good ones ask what brought you. A reading aimed at a question you actually have is a different experience from a general description of your personality.
What it covers
Traditionally: temperament and disposition, how you handle relationships and work, where there's tension in the chart, recurring themes. Many people come with a specific area — a relationship pattern, a career decision, a period that's been difficult.
What it isn't
It isn't a prediction. Astrology has no demonstrated predictive mechanism, and studies testing predictive claims have not supported them. Anyone telling you what will happen, or when, is going beyond what the practice can do.
It isn't therapy, and an astrologer isn't a therapist unless separately qualified. It isn't medical, legal or financial advice. And it isn't a diagnosis of anything.
What it is: a framework for structured reflection, and an hour of someone's full attention on your situation. People find that valuable for reasons that don't require the astrology to be literally causal.
Why people find it useful anyway
The honest answer most thoughtful astrologers give is that a chart is a vocabulary — a set of distinctions for talking about temperament, tension and timing that's richer than everyday language offers.
Having a difficult pattern described in those terms, by someone who isn't inside your life, is often the useful part. Whether the planets cause anything is a separate question from whether the conversation is worth having.
Before you book
Ask how they work, how long it takes, whether you'll get a recording, and what they need from you. Ask what they do if you ask something they can't answer.
Be wary of anyone promising outcomes, pressing you toward more sessions, or claiming to know what will happen to you.