Beyond one sign
Sun, Moon and rising zodiac signs
What the “big three” of a birth chart mean, how they differ and what you need to calculate them.
| Placement | What it is | Changes every | You need |
|---|---|---|---|
| Sun sign | The sign the Sun was in at birth | About 30 days | Date (time only on a cusp) |
| Moon sign | The sign the Moon was in at birth | About 2.5 days | Date and time |
| Rising sign (ascendant) | The sign on the eastern horizon at birth | About 2 hours | Date, exact time and place |
Sun signs in the zodiac
The Sun sign is what most people mean by “my zodiac sign”. Astrologers describe it as the core identity and conscious drive. Explore the 12 signs.
Moon signs: what your Moon sign means
The Moon sign is traditionally read as the emotional nature: what someone needs to feel safe, and how they react instinctively. Because the Moon moves quickly, twins born an hour apart can occasionally have different Moon signs.
Rising signs: what your ascendant means
The rising sign, or ascendant, is the degree of the zodiac rising on the eastern horizon at birth. Astrologers associate it with first impressions, appearance and the way someone approaches new situations. It also sets the starting point of the houses.
Calculate your big 3 zodiac signs
Use the free birth chart calculator to find all three from your birth date, time and place.
Frequently asked questions
What is my big three?
Your Sun, Moon and rising signs. Together they are the most-quoted summary of a birth chart.
Which is more important, Sun or rising sign?
Astrologers disagree. Many modern astrologers give the Sun, Moon and rising sign roughly equal weight; Hellenistic astrology placed great weight on the ascendant.
Can my rising sign be the same as my Sun sign?
Yes. It happens when you were born around sunrise.
Updated · How we write and check this guide