Sun, Moon & Rising Sign Calculator

How to use the Sun, Moon & Rising Sign Calculator

1. Enter your date and time of birth
2. Choose the city you were born in
3. See your Sun, Moon and Rising signs

About this tool

Find your Big Three — Sun, Moon and Rising signs — from your birth date, time and city, calculated from exact planetary positions. Sun, Moon & Rising Sign Calculator is part of WebToolNest's collection of free everyday utilities. It works instantly in your browser with no account and no installation.

Your Big Three

In Western astrology the three most important placements in a birth chart are often called the Big Three:

• Sun sign — your core identity. It is the sign most people know, based on your birthday.
• Moon sign — your emotional side: what you need to feel safe and how you react. The Moon changes sign about every two and a half days.
• Rising sign (Ascendant) — the sign rising on the eastern horizon at the moment you were born. It describes your outward style and first impressions, and it changes roughly every two hours, which is why your birth time matters.

How it is calculated

The calculator converts your birth time to Universal Time using your birthplace's time zone (including daylight saving rules for that date), then computes the exact positions of the Sun and Moon along the zodiac with a professional astronomy library. The rising sign comes from the local sidereal time and the latitude of your birthplace. It uses the tropical zodiac used in Western astrology; Vedic (sidereal) astrology gives signs about 24° earlier.

Don't know your birth time? You will still get your Sun sign, and your Moon sign unless the Moon changed sign that day — the tool tells you when it did.

Frequently asked questions