The Big Three — Sun, Moon, and Rising — are the foundation of your chart. Your Sun sign describes your core identity and life purpose. Your Moon sign describes your emotional nature and inner world. Your Rising sign (Ascendant) describes how you appear to others and your approach to life.

• Your Sun sign is determined by your birth date
• Your Moon sign requires your birth date and year — the Moon changes signs every 2-3 days
• Your Rising sign requires your exact birth time — it changes every 2 hours
• If you don't know your birth time, focus on Sun and Moon first