Gemini Zodiac Sign: Dates, Traits and Ruling Planet
- Usual dates
- May 21 to June 20
- Element
- Air
- Mode
- Mutable
- Ruling planet
- Mercury
Dates and the edge days
Gemini dates are May 21 to June 20. May 21 and June 20 are the edge days: the year and the birth time can put the Sun on either side of the change. The calculator checks that moment instead of trusting the printed range.
Element, mode, and ruler
Gemini is an air sign, and it is mutable. Mutable signs close a season and overlap the next one. Gemini is mutable air, the sign the old calendars place at the end of spring in the northern year. Curious, talkative, always juggling ideas.
Mercury rules Gemini and also Virgo. For Gemini the textbooks lean on Mercury's association with speech, messages, and short trips, not on Virgo's association with sorting and repair. Gemini is the twins, and the usual write-up is about holding two ideas at once: asking, switching, and explaining. Air signs in this system are about thought and contact rather than about soil or heat. None of this predicts a conversation. It is the inherited description of the third 30 degrees of the zodiac.
Moon in Gemini
The Moon in Gemini is described as a mind that soothes itself by talking, reading, or changing the subject. Feelings, in this picture, stay lighter when there is something new to say. The Moon's two-and-a-half-day stay in a sign is why a birth time still matters on changeover days.
Gemini rising
Gemini rising is the tradition's quick first impression: curious eye contact and a habit of answering with a question. The horizon, not the birthday alone, decides it. Use the rising calculator with a city and a clock time.
Sign and constellation
The constellation Gemini is marked by two bright stars, Castor and Pollux. The sign covers the days when the Sun is in the third 30-degree slice of the zodiac.
Calculators
For the Sun sign, use the zodiac calculator. The Moon, Rising, Mercury, Venus, and Mars calculators answer a different question, and the Gemini horoscope is a separate daily note on the same sign.
Zodiac sign calculator · Moon · Rising · Gemini horoscope
Dates usually counted as Gemini
May 21 · May 22 · May 23 · May 24 · May 25 · May 26 · May 27 · May 28 · May 29 · May 30 · May 31 · June 1 · June 2 · June 3 · June 4 · June 5 · June 6 · June 7 · June 8 · June 9 · June 10 · June 11 · June 12 · June 13 · June 14 · June 15 · June 16 · June 17 · June 18 · June 19 · June 20
Questions
What are Gemini dates?
Gemini dates are May 21 to June 20 in the usual tropical calendar. Those two edges are changeover days: the year and the birth time can put the Sun in Gemini or in the neighboring sign. Each date page below uses noon UTC, the same engine as the zodiac calculator, so you can see whether that birthday stays in Gemini.
What month is Gemini?
Gemini season sits in May and June. It does not fill either month on its own. May 21 is the usual start, and June 20 is the usual last day, with a clock time that shifts a little each year. Use the date list on this page, or the May and June birthday hubs.
When does Gemini season start?
Gemini season usually starts on May 21. That is the calendar day when the Sun is treated as entering Gemini, but the exact minute depends on the year. The zodiac calculator uses the same tropical longitude as these pages. If the birthday is May 21 or June 20, check the year rather than the printed range.