The Big Three are your Sun sign (core self), Moon sign (emotions) and Rising sign (how you come across). Enter your birth date, time and city and TarotDew calculates all three, plus a full birth chart with houses and aspects. The Sun needs only a date, the Moon is best with a time, and the Rising sign needs both time and place. It is free, needs no sign-up, and your birth data stays in your browser.
- Free with no sign-up and no ads.
- Sun, Moon and Rising sign, each with sign and house.
- City search with historical time zones and daylight saving.
- Calculated with the open-source astronomy-engine library, accurate to well under 1°.
- Full chart wheel, Placidus houses and aspects included.
- Birth data stays in your browser; share a 9:16 Big Three image if you like.
Example reading
Input: 14 March 1996, 07:30, Chicago
Result: Sun in Pisces, Moon in Capricorn, Rising in Aries. A Pisces Sun suggests someone gentle and imaginative at heart, a Capricorn Moon finds comfort in structure and quiet responsibility, and an Aries Rising comes across as direct and quick to act. The chart below the Big Three shows every planet, house and aspect.
How to find your Big Three
- Enter your birth date.
- Add your birth time, as exact as you can. A birth certificate is the best source.
- Search for your birth city so the correct historical time zone is used.
- Press the button. Your Sun, Moon and Rising sign appear at the top.
- Scroll down for the full chart, or save the Big Three as a share image.
What each of the Big Three means
| Placement | Represents | What you need to calculate it | How fast it changes |
|---|---|---|---|
| Sun sign | Core identity, what drives you | Birth date | About once a month |
| Moon sign | Emotions, comfort, what you need to feel safe | Birth date, ideally time | About every 2.5 days |
| Rising sign (Ascendant) | First impressions, your outward style | Birth date, exact time and place | About every 2 hours |
Because the Rising sign moves so fast, a birth time that is off by an hour can change it. If you don't know your time, TarotDew still shows your Sun and Moon and tells you the Rising sign needs a time.
Reading your Big Three together
Read them as a sentence: "I am a [Sun] at heart, I feel like a [Moon], and I come across as a [Rising]." When the three share an element (fire, earth, air or water) the personality tends to feel consistent. When they differ, people often say others misread them at first, which is the Rising sign doing its job.
- Fire (Aries, Leo, Sagittarius): direct, warm, energetic.
- Earth (Taurus, Virgo, Capricorn): steady, practical, grounded.
- Air (Gemini, Libra, Aquarius): curious, social, idea-led.
- Water (Cancer, Scorpio, Pisces): sensitive, intuitive, deep.
Why this calculator is precise
Many quick calculators use simplified tables or ignore historical time zones, which can put the Moon or Rising sign in the wrong place near a sign change. TarotDew computes planet positions with astronomy-engine (based on VSOP87 and NASA JPL data) and looks up the time zone and daylight saving rules in force at your birth date and city. TarotDew is for entertainment and self-reflection only; it is not a substitute for medical, legal, financial or mental-health advice.
How TarotDew compares
| TarotDew Big Three | Typical quick calculator | |
|---|---|---|
| Historical time zones | Yes, by city and date | Often manual |
| Full chart included | Wheel, houses, aspects | Often just three signs |
| Sign-up | None | Sometimes required |
| Ads | None | Often |
| Share image | 9:16 Big Three card | Rarely |
Checked on each site's public pages in October 2026; features change, so check them yourself too.
Frequently asked questions
What is my Big Three in astrology?
Your Sun, Moon and Rising sign. Together they describe your core self, your emotional side and the impression you give.
Can I find my Big Three without a birth time?
You can find your Sun sign and usually your Moon sign. The Rising sign needs an exact birth time and place.
Is this Big Three calculator free?
Yes. It is free with no sign-up and no ads, and it includes your full birth chart.
Why is my Rising sign different on another site?
Usually a different birth time or time zone. TarotDew uses the historical time zone and daylight saving for your birth city and date.
Is my birth data stored?
The chart is computed in your browser and birth data stays there unless you choose to share a link.
Which is most important, Sun, Moon or Rising?
None is more important. The Sun is your center, the Moon your inner life and the Rising sign your outer style; they work together.