In Sun sign Astrology, yes a person born on this day would be considered to be born o a cusp. A cusp is the point of transition from one sign to another (usually considered to be 5° at the beginning or end of a sign or the very last 29° - 0° of a sign). Any planet can be on a cusp. Planets born on a cusp are in one sign but carry the traits of both.
Saggitarius is November 22-December 21. Capricorn is December 21-January 20. Probably Saggitarius is Nov. 22 until Dec 21, so it would be Capricorn.
Gemini/Cancer Cusp Jun 21-24 the Cusp of Magic Positive attributes: Affectionate, Seductive, Objective Negative attributes: Isolated, Selfish, Demanding.
They are Gemini-Cancer Cusp. They aren't exactly true Geminis as they have characteristics of both Gemini and Cancer.
The Sun sign for December the 21st is Capricorn.
Aries-Taurus cusp
Being born between November 22 and December 21.
If you were born before June 21, you are a Gemini. If you were born June 21 or after, you are a Cancer.May 21 - June 20 - GeminiJune 21 - July 22 - Cancer
21 November is a transition stage - when the Sun is moving between two signs, in this case Scorpio and Sagittarius. People who are born during these times are said to be "Born on the Cusp" and possess qualities of both zodiac signs.In this case, you would be born on the Scorpio and Sagittarius cusp. You can say your sign is Scorpio though, but it's not quite accurate.
Samuel L. Jackson was born on December 21, 1948.
Carl Wilson was born on December 21, 1946.
Mark Ingram Jr. was born on December 21, 1989.
21 December 1989 (21)