Sun, Moon & Rising Sign Calculator — Your Big 3
Enter your birth date and get your Sun sign instantly — then add your birth time and place to unlock your full Big 3, plus Mercury, Venus & Mars for the Big 6, computed from real planetary positions.
What Are the Sun, Moon & Rising Signs?
Most people know their Sun sign — it's what newspaper horoscopes use, and it only takes a birth date to find. But your birth chart is a snapshot of the entire sky at the moment you were born. The Big 3 — Sun, Moon, and Rising — are the headline. The rest of the chart is the article.
Your Sun sign is the deliberate, daylight version of you — identity, direction, pride. Your Moon sign is your emotional life — the you that comes out at home. Your Rising sign (the Ascendant) is the sign climbing the eastern horizon at your birth: the first impression you make, and the anchor that lays out the twelve houses of your chart.
Add your Mercury (how you think), Venus sign (how you love), and Mars (how you act) signs and you have your Big 6 — the fuller six-placement snapshot people trade on TikTok and Reddit. This calculator computes all six at once.
The Moon changes signs every two to three days and the Ascendant every two hours, which is why this calculator asks for a birth time and place instead of guessing from date ranges — and why it can get cusp birthdays right when simple lookup tables can't.
Why Date-Range Tables Get Cusp Birthdays Wrong
Magazine horoscopes assume the Sun changes signs on the same date every year. It doesn't — the switch drifts by up to a day depending on the year. Born on April 19 or 20? A date table is guessing; a calculator pulling real planetary positions for your birth year isn't. That's the whole reason this tool asks for a year. To be upfront: the instant answer you get here from a date alone is that same kind of table lookup — the difference is it flags a cusp birthday instead of guessing it, and adding your birth place runs the real computation.
Two tips for the most accurate result: take your birth time from a birth certificate if you can (family memory is famously off by hours), and don't worry about daylight saving — we resolve the historical timezone for your birth place and date automatically.
All 12 Zodiac Signs
Aries
Mar 21 – Apr 19
Taurus
Apr 20 – May 20
Gemini
May 21 – Jun 20
Cancer
Jun 21 – Jul 22
Leo
Jul 23 – Aug 22
Virgo
Aug 23 – Sep 22
Libra
Sep 23 – Oct 22
Scorpio
Oct 23 – Nov 21
Sagittarius
Nov 22 – Dec 21
Capricorn
Dec 22 – Jan 19
Aquarius
Jan 20 – Feb 18
Pisces
Feb 19 – Mar 20
Sun, Moon & Rising — FAQ
What's my zodiac sign?
Your zodiac sign (technically your Sun sign) is the sign the Sun occupied at the moment you were born. Enter your birth date above and press Calculate for an instant answer; enter your birth place too and it is computed from real planetary positions, so cusp birthdays come out right. Add your birth time as well for your Moon and Rising signs, which change too quickly to look up from a date table.
What are the Big 3 in astrology?
Your Big 3 are your Sun sign (core identity), Moon sign (emotions and inner needs), and Rising sign (how you come across and how your chart's houses are laid out). Together they explain why two people with the same Sun sign can feel completely different.
What if I don't know my birth time?
You'll still get five of your six signs — Sun, Moon, Mercury, Venus, and Mars — computed for noon on your birth date. Only your Rising sign genuinely requires a birth time, because it changes roughly every two hours. And if your Moon was close to switching signs that day, the calculator flags it so you know to double-check with an exact time.
Can my Sun sign be different from what date tables say?
Yes — if you were born on a cusp day (for example April 19–20), the Sun's exact sign-change time shifts by up to a day depending on the year. From your date alone this calculator flags a cusp birthday rather than resolving it; enter your birth place as well and it uses your birth year and real astronomical data to get cusp birthdays right where simple date-range lookups guess.
What's the difference between a sun sign and a rising sign?
Your Sun sign is who you are at your core; your Rising sign (or Ascendant) is the sign that was rising on the eastern horizon when you were born — the face you show first. People usually 'read' you as your Rising sign before they know you well.
What is the Big 6 in astrology?
Your Big 6 is your Big 3 plus your Mercury, Venus, and Mars signs — how you communicate, how you love, and how you act. It's the fuller 'introducing myself in six placements' snapshot popular on TikTok and Reddit. This calculator gives you all six at once.
Is this sun, moon and rising calculator free?
Yes — your full Big 6 is free, no account needed. Creating a free ZodiScope account adds your complete birth chart (all 10 planets, 12 houses, and aspects), a chart wheel, and daily horoscopes personalized to it.
Your Big 3 Is Just the Beginning
Get a daily horoscope written for your full natal chart — every planet, house, and aspect — computed from NASA JPL data and the Swiss Ephemeris.
The free chart needs no credit card; the report is a one-time purchase with instant download — no account needed.
More free calculators: your Venus sign — how you love, with Mars and Mercury in the same tool; your North Node, the direction your chart points you in; your Jupiter sign, where luck comes easiest; and your Saturn return dates, the age the reckoning lands. Or browse all the free tools. Want every planet, house and aspect? Try the free birth chart calculator.