13 sept. 2021 · Gemini cancer cusp (also referred to as cancer Gemini cusp at times) means the overlap time between the end days of the Gemini zodiac sign and the beginning days of the Cancer zodiac sign. Gemini is the 3rd zodiac sign (May 21st to June 21st) in the zodiac belt and Cancer is the 4th zodiac sign (June 22nd to July 22nd).