Gemini: Western zodiac dates and meaning
Gemini illustration
Gemini covers late spring in Air-element fashion: curious, talkative lore, and a calendar slot right before summer begins.
Date range on this site
For calculator results we treat Gemini as May 21 to June 20. Ranges are inclusive and use local calendar dates. If you were born on a cusp day, another chart might tip you into Cancer; we stick to one consistent map so results do not flip between page loads.
Element
Gemini is grouped as a Air sign. Air signs in this system are Gemini, Libra, and Aquarius. Element language is folklore structure, not chemistry.
Tropical zodiac vs the night sky
The Western system used here is tropical: twelve equal slices tied to seasons around the year. That is different from pointing a telescope at the constellation once named Gemini. NASA and astronomy educators regularly explain that astrology did not get a surprise new calendar from a lab press release; the mismatch between signs and modern constellation dates is old celestial geometry, not a personality update.
Birth month gems are separate
A birthday can have both a Western sign and a month birthstone. Those charts answer different questions. If you want the jewelry-month story, browse birthstones.
Find your weekday
Curious what day of the week you were born under this late spring Gemini window? Try the birthday calculator.
Common questions
When is Gemini?
On this site, Gemini covers May 21 to June 20 in the tropical (season-based) Western zodiac. Some charts shift cusps by a day.
Is Gemini a science fact?
No. Zodiac signs are cultural astrology labels. Astronomy describes stars and seasons; it does not assign personality by birth date.
Why might my constellation not match my sign?
Tropical signs follow seasons, not today's constellation boundaries. Earth's axis has also drifted since ancient charts were drawn, so star backgrounds and sign names no longer line up the way many people assume.