December 21 Zodiac Sign: Sagittarius
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- Date
- December 21
- Sun sign
- Sagittarius to Capricorn
- Usual range
- November 22 to December 21
- Place in sign
- early, decan 1
- Sub-ruler
- Saturn
- Element
- Fire
- Modality
- Mutable
- Ruling planet
- Jupiter
- Changeover
- Yes, on or near this date
- Constellation
- Sagittarius
December 21 is a changeover day. At noon UTC across the 41 years from 1992 to 2032, the Sun was in Sagittarius in 35 years and Capricorn in 6 years.
The Sun moved from Sagittarius into Capricorn on December 21 in 27 of those years. The latest time in this span is 21 December 2032 at 07:56 UTC. That minute is the same tropical crossing the zodiac calculator uses. A birth city changes which clock time it falls on.
Capricorn dates are December 22 to January 19. It is an earth sign, cardinal, ruled by Saturn. Sagittarius is the sign just before it. Patient, ambitious, serious about the long game.
December 21 sits within two days of a sign change on December 22. If the birth was late on this date, check the year in the calculator rather than the printed range.
In 2024 at noon UTC, the Sun on December 21 is in the first decan of Capricorn, the early 10 degrees of the sign. The triplicity sub-ruler of that slice is Saturn.
The constellation behind the Sun on December 21 is Sagittarius. That is the true place of the Sun in the stars, and it is a separate fact from the astrological sign.
Moon, Rising, Mercury, Venus, and Mars still need a birth time and place. This page only settles the Sun sign.
Noon UTC, year by year
| Year | Sun sign at noon UTC | Changeover |
|---|---|---|
| 1992 | Sagittarius | 14:43 UTC |
| 1993 | Sagittarius | 20:26 UTC |
| 1994 | Sagittarius | No changeover this year |
| 1995 | Sagittarius | No changeover this year |
| 1996 | Sagittarius | 14:06 UTC |
| 1997 | Sagittarius | 20:07 UTC |
| 1998 | Sagittarius | No changeover this year |
| 1999 | Sagittarius | No changeover this year |
| 2000 | Sagittarius | 13:37 UTC |
| 2001 | Sagittarius | 19:21 UTC |
| 2002 | Sagittarius | No changeover this year |
| 2003 | Sagittarius | No changeover this year |
| 2004 | Sagittarius | 12:41 UTC |
| 2005 | Sagittarius | 18:35 UTC |
| 2006 | Sagittarius | No changeover this year |
| 2007 | Sagittarius | No changeover this year |
| 2008 | Sagittarius | 12:03 UTC |
| 2009 | Sagittarius | 17:46 UTC |
| 2010 | Sagittarius | 23:38 UTC |
| 2011 | Sagittarius | No changeover this year |
| 2012 | Capricorn | 11:11 UTC |
| 2013 | Sagittarius | 17:11 UTC |
| 2014 | Sagittarius | 23:02 UTC |
| 2015 | Sagittarius | No changeover this year |
| 2016 | Capricorn | 10:44 UTC |
| 2017 | Sagittarius | 16:28 UTC |
| 2018 | Sagittarius | 22:22 UTC |
| 2019 | Sagittarius | No changeover this year |
| 2020 | Capricorn | 10:02 UTC |
| 2021 | Sagittarius | 15:59 UTC |
| 2022 | Sagittarius | 21:47 UTC |
| 2023 | Sagittarius | No changeover this year |
| 2024 | Capricorn | 09:20 UTC |
| 2025 | Sagittarius | 15:03 UTC |
| 2026 | Sagittarius | 20:50 UTC |
| 2027 | Sagittarius | No changeover this year |
| 2028 | Capricorn | 08:20 UTC |
| 2029 | Sagittarius | 14:14 UTC |
| 2030 | Sagittarius | 20:09 UTC |
| 2031 | Sagittarius | No changeover this year |
| 2032 | Capricorn | 07:56 UTC |
Sign pages: Sagittarius and Capricorn. Check this birthday in the zodiac calculator.
Questions
What zodiac sign is December 21?
December 21 can be Sagittarius or Capricorn. The Sun's tropical longitude at noon UTC is the same 30 degree sign the zodiac calculator reports for a 12:00 UTC birth. In some years from 1992 to 2032 the sign changes on this date, so the year and the clock decide. Confirm the minute in the calculator.
Is December 21 a cusp birthday?
Yes. A cusp here means the Sun crosses a sign boundary on or near December 21 in the years we checked. The crossing minute comes from the same engine as the calculator, not from a printed range. Your city and clock can place the birth in either sign. The year table lists noon UTC for each year.
What is the December 21 star sign?
People searching for the December 21 star sign usually mean the Sun sign. On this page that is Sagittarius, a fire sign, mutable, ruled by Jupiter, in the early decan with Saturn as the triplicity sub-ruler. Sagittarius dates are November 22 to December 21. The constellation behind the Sun is a separate fact.