- Dates
- 21 May to 20 June
- Symbol
- ♊ the Twins
- Element
- Air
- Modality
- Mutable
- Ruler
- Mercury
What the Gemini sign means
Gemini, the Twins, is the third sign of the zodiac and the archetype of the messenger: air by element, mutable by mode, and ruled by Mercury. In astrology, someone is "a Gemini" when the Sun was in Gemini at their birth, roughly 21 May to 20 June. Those cusp dates shift by a day some years, so if you were born near the edge, only your actual chart settles it.
The Gemini temperament
Air signs run on perspective, language, and the room to think a thing through. As a mutable sign, it adapts: it bends and changes shape as circumstances do. Put together, Gemini tends towards gathering options and connections, quick and curious, restless with a single answer, and like every sign it holds both a gift and its shadow. Vela reads none of this as a verdict on who you are, only as a lens for noticing.
If Gemini is your Sun sign, where do you recognise the messenger in yourself, and where is it a costume you have outgrown?
Read Gemini in depth
Your sign is one of three placements that matter most. Read Gemini as a Sun sign, your Gemini Moon, and your Gemini rising, see the personal planets in Gemini (Venus, Mars), read today's Gemini horoscope, or explore Gemini compatibility.
Frequently asked
What are the Gemini dates?
The Sun is in Gemini from about 21 May to 20 June each year. The cusp dates move by a day some years, so if you were born near the edge, casting your chart is the only way to be sure.
What element and ruler is Gemini?
Gemini is air by element and mutable by mode, ruled by Mercury.
Is astrology a prediction?
Not in Vela's hands. Your sign is a lens for reflection, a way of noticing patterns in yourself, never a forecast of what you must do or become.