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December 21 zodiac sign: Sagittarius or Capricorn

If you were born on December 21, your zodiac sign is Sagittarius (November 22 – December 21). It is a mutable fire sign ruled by Jupiter. It is a cusp day, though: on this date the Sun often moves into the neighbouring sign, Capricorn. Details and times below.

Sign: ♐ Sagittarius
Element: fire
Modality: mutable
Ruling planet: Jupiter
Decan: 3rd decan (20–30°), Saturn
Tarot card of the sign: Temperance
Decan card: Ten of Wands
Day number: 3
Birthstone: turquoise, tanzanite and zircon

Is December 21 a cusp date?

Across 1950–2025 (76 years), on December 21 the Sun was: all day in Sagittarius: 24 years; changed from Sagittarius to Capricorn during the day: 52 years. If you were born in a change year, your birth time decides: before the Sun's ingress you have the earlier sign, after it the new one.

US Eastern time

Time of the sign change in each year (US Eastern time)

1952: 16:43
1953: 22:31
1956: 15:59
1957: 21:48
1960: 15:26
1961: 21:19
1964: 14:49
1965: 20:40
1968: 13:59
1969: 19:43
1972: 13:13
1973: 19:07
1976: 12:35
1977: 18:23
1980: 11:56
1981: 17:50
1982: 23:38
1984: 11:23
1985: 17:07
1986: 23:02
1988: 10:28
1989: 16:22
1990: 22:07
1992: 09:43
1993: 15:26
1994: 21:22
1996: 09:05
1997: 15:07
1998: 20:56
2000: 08:37
2001: 14:21
2002: 20:14
2004: 07:41
2005: 13:35
2006: 19:22
2008: 07:03
2009: 12:47
2010: 18:38
2012: 06:11
2013: 12:11
2014: 18:03
2015: 23:48
2016: 05:44
2017: 11:28
2018: 17:22
2019: 23:19
2020: 05:02
2021: 10:59
2022: 16:48
2023: 22:27
2024: 04:20
2025: 10:03

Traits: Sagittarius

Sagittarius needs space, meaning and adventure. Optimistic, honest and curious about the world, from travel to philosophy. The challenge is impatience and promising too much.

3rd decan: Saturn adds patience, responsibility and staying power.

Birthday numerology: 21

Three: expression, humour and ease with words and creating.

Best matches

Traditionally Sagittarius gets on most easily with signs of the same element (Aries, Leo) and with the complementary element, air (Gemini, Libra, Aquarius).

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Questions

What zodiac sign is December 21?

If you were born on December 21, your zodiac sign is Sagittarius (November 22 – December 21). It is a mutable fire sign ruled by Jupiter.

Which tarot card matches December 21?

Sagittarius corresponds to Temperance in tarot, and the 3rd decan to the Ten of Wands.

What does birthday number 21 mean?