The twelve constellations
Gemini constellation
The constellation Gemini lies on the ecliptic, the path the Sun, the Moon and the planets take across the sky. Along the ecliptic it is 27.8° wide. It belongs to the element Light, and in the calendar to the day type Flower day.
Star map
The boundary is the one set by the International Astronomical Union in 1928. The horizontal line is the ecliptic, the band around it the Moon’s path.
Bright stars: Kastor, Pollux
Who is in front of it right now
Neither the Sun nor the Moon nor any planet stands in front of it at the moment.
When the Moon is in front of it
The next dates. All dates of the year are on the page “Moon in Gemini”.
- Fri, Oct 30, 2026, 02:56 AM – Sun, Nov 1, 2026, 01:30 AM
- Thu, Nov 26, 2026, 11:40 AM – Sat, Nov 28, 2026, 08:38 AM
- Wed, Dec 23, 2026, 10:46 PM – Fri, Dec 25, 2026, 06:36 PM
- Wed, Jan 20, 2027, 10:10 AM – Fri, Jan 22, 2027, 06:10 AM
When the Sun is in front of it
2027: from Tue, Jun 22, 2027, 04:18 AM until Wed, Jul 21, 2027, 09:06 AM.
Width compared
The twelve constellations along the ecliptic, in degrees.
The other constellations
Frequently asked questions
How wide is the Gemini constellation?
27.8° along the ecliptic, rank 6 of the twelve. The Moon takes about 2.1 days on average to cross it.
Which element does the Gemini constellation belong to?
To the element Light. When the Moon stands in front of it, the calendar shows the day type Flower day.
When is the Sun in front of the Gemini constellation in 2027?
From Tue, Jun 22, 2027, 04:18 AM until Wed, Jul 21, 2027, 09:06 AM, local time Europe/London.
Stars, figures and boundaries: d3-celestial by Olaf Frohn (BSD licence); IAU boundaries of 1928.