March 21 Zodiac Sign: Aries
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- Date
- March 21
- Sun sign
- Pisces to Aries
- Usual range
- March 21 to April 19
- Place in sign
- early, decan 1
- Sub-ruler
- Mars
- Element
- Fire
- Modality
- Cardinal
- Ruling planet
- Mars
- Changeover
- Yes, on or near this date
- Constellation
- Pisces
March 21 is a changeover day. At noon UTC across the 41 years from 1992 to 2032, the Sun was in Aries in 41 years.
The Sun moved from Pisces into Aries on March 21 in 4 of those years. The latest time in this span is 21 March 2007 at 00:07 UTC. That minute is the same tropical crossing the zodiac calculator uses. A birth city changes which clock time it falls on.
Aries dates are March 21 to April 19. It is a fire sign, cardinal, ruled by Mars. Pisces is the sign just before it. Bold, direct, quick to start things.
March 21 sits within two days of a sign change on March 20. 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 March 21 is in the first decan of Aries, the early 10 degrees of the sign. The triplicity sub-ruler of that slice is Mars.
The constellation behind the Sun on March 21 is Pisces. 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 | Aries | No changeover this year |
| 1993 | Aries | No changeover this year |
| 1994 | Aries | No changeover this year |
| 1995 | Aries | 02:14 UTC |
| 1996 | Aries | No changeover this year |
| 1997 | Aries | No changeover this year |
| 1998 | Aries | No changeover this year |
| 1999 | Aries | 01:46 UTC |
| 2000 | Aries | No changeover this year |
| 2001 | Aries | No changeover this year |
| 2002 | Aries | No changeover this year |
| 2003 | Aries | 01:00 UTC |
| 2004 | Aries | No changeover this year |
| 2005 | Aries | No changeover this year |
| 2006 | Aries | No changeover this year |
| 2007 | Aries | 00:07 UTC |
| 2008 | Aries | No changeover this year |
| 2009 | Aries | No changeover this year |
| 2010 | Aries | No changeover this year |
| 2011 | Aries | No changeover this year |
| 2012 | Aries | No changeover this year |
| 2013 | Aries | No changeover this year |
| 2014 | Aries | No changeover this year |
| 2015 | Aries | No changeover this year |
| 2016 | Aries | No changeover this year |
| 2017 | Aries | No changeover this year |
| 2018 | Aries | No changeover this year |
| 2019 | Aries | No changeover this year |
| 2020 | Aries | No changeover this year |
| 2021 | Aries | No changeover this year |
| 2022 | Aries | No changeover this year |
| 2023 | Aries | No changeover this year |
| 2024 | Aries | No changeover this year |
| 2025 | Aries | No changeover this year |
| 2026 | Aries | No changeover this year |
| 2027 | Aries | No changeover this year |
| 2028 | Aries | No changeover this year |
| 2029 | Aries | No changeover this year |
| 2030 | Aries | No changeover this year |
| 2031 | Aries | No changeover this year |
| 2032 | Aries | No changeover this year |
Sign pages: Aries and Pisces. Check this birthday in the zodiac calculator.
Questions
What zodiac sign is March 21?
March 21 can be Aries. 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 March 21 a cusp birthday?
Yes. A cusp here means the Sun crosses a sign boundary on or near March 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 March 21 star sign?
People searching for the March 21 star sign usually mean the Sun sign. On this page that is Aries, a fire sign, cardinal, ruled by Mars, in the early decan with Mars as the triplicity sub-ruler. Aries dates are March 21 to April 19. The constellation behind the Sun is a separate fact.