Sun, Moon and Rising Calculator: How to Read Your Big Three
By KosmoHow Kosmo makes its readings
Kosmo’s free report calculates your Sun, Moon and Rising signs from your birth details and shows them in the Birth chart tab. To get all three, enter your birth time as well as your date and birthplace. If you do not know the time, you can still get a useful partial result.
Enter your details, then open Birth chart
- Select Get full report below the four forecast frames on this page, or tap a forecast frame. The report is free and requires no account.
- Enter your birthday and name. Use the birth date recorded for the place where you were born, rather than converting it yourself.
- Enter your recorded birth time, or choose I don’t know. Do not substitute a guessed time just to obtain a Rising sign.
- Choose your birthplace from the city list, or enter coordinates and a time zone manually. Use the place of birth, not your current home.
- Open Birth chart among the four results tabs: Weekly love horoscope, Aura, Angel number and Birth chart. Start with the three sign names before reading the short interpretation.
The report uses the tropical zodiac and historical time zones. Your birth details are not stored and are not included in shared images. If a result surprises you, check the date, morning or evening time, and birthplace before trying to interpret the difference.
Give each placement a different question
In astrological tradition, the Big Three are symbolic perspectives on identity, emotional needs and how you meet the world. Reading them together is more useful than choosing whichever sign description sounds most flattering.
| Placement | Focus | Reflection question |
|---|---|---|
| Sun | Identity and direction | What feels meaningful to pursue? |
| Moon | Emotional needs and comfort | What helps me feel settled? |
| Rising sign (Ascendant) | Approach and first impressions | How do I enter unfamiliar situations? |
What an uncertain time changes
Without a birth time, Kosmo omits the Rising sign and houses. If the Moon occupied two signs during that local day, the result lists both, such as Scorpio or Sagittarius. That is uncertainty about the birth moment, not a special blended Moon sign. The Sun can also have two possibilities on a sign-change day.
Do not choose the option that sounds most like you and treat it as verified. Keep both possibilities visible, or look for a birth certificate or family record. A time estimate should remain an estimate even when one reading feels familiar.
Turn the result into one useful observation
Write one sentence for each placement, then test those reflections against your experience of an actual date or conversation. Next, explore Moon sign compatibility for emotional needs or the Venus sign guide for affection. If your time is missing, the birth chart without a birth time guide explains what you can still read confidently.