Gemini is the Twins, Castor and Pollux, standing side by side with their heads marked by the two bright stars that carry their names. Pollux is the brighter, an orange giant with a planet of its own. The Sun is in Gemini from the June solstice to late July. The horoscope’s Gemini ends at the solstice, so almost nobody told they are a Gemini was born with the Sun anywhere near the Twins.
The dates above are computed for 2026 from the constellation boundaries the International Astronomical Union fixed in 1930. They move by about a day every seventy years, so they are good for a lifetime, and for the particular day you were born the calculator will check the boundary itself.
