Zodiac signs, dates and charts, explained plainly
What would you like to understand?
Look up your sign, learn how a birth chart fits together, or check the astronomy behind a claim you've seen online. Start with whatever you came here to find out.
Quick reference tool
What is my zodiac sign?
Enter a birth date for the standard tropical zodiac range. The calculation runs in your browser and is not stored.
Pick a starting point
Start with your goal
I’m new to astrology
Go one step at a time: zodiac systems, elements, modalities, planets, signs, then a full birth chart.
I know my sign
Explore dates, element, modality, ruler, mythology, constellation context and chart interpretation.
I want to understand my chart
Learn planets, signs, houses, aspects, the Big Three and why birth time matters.
I want history and astronomy
See which parts are measured astronomy, which are calendar rules, which are history and which are astrological interpretation.
Core learning
Learn the basics first
Every sign is one element plus one modality. The element is its family. The modality is how it moves through its season. Learn those two and the twelve signs stop looking like a random list.
Explore your sign
The twelve zodiac signs
Each sign page gives you the dates, element, modality, ruler and opposite sign, plus a note on the constellation that shares its name.
Aries
March 21–April 19
Taurus
April 20–May 20
Gemini
May 21–June 20
Cancer
June 21–July 22
Leo
July 23–August 22
Virgo
August 23–September 22
Libra
September 23–October 22
Scorpio
October 23–November 21
Sagittarius
November 22–December 21
Capricorn
December 22–January 19
Aquarius
January 20–February 18
Pisces
February 19–March 20
Truthful context
Astrology and astronomy answer different questions.
Astronomy measures what is physically up there. Astrology is a cultural tradition of reading meaning into it. Every page on this site tells you which of the two you're reading.
Understand signs, constellations and the ecliptic →