One birth date is enough for a complete reading. You do not need an account, and you do not need to pay.
Birth time is optional. Adding it deepens the chart, but leaving it out does not give you a partial or watered-down reading — the date alone carries the whole numerology spine and the day marks.
Birthplace is optional too, for the same reason.
You can change any of this later under Settings → Your details. Changing your birth date re-marks your calendar immediately.
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