March 21 zodiac: Pisces or Aries?

March 21 falls near the Pisces–Aries boundary. There is no single answer for every year and time zone. The table shows the answer for this UTC calendar date in each year.

If your birthday is March 21 in local time, first convert the full birth date and time to UTC; it may land on the previous or next date. The Sun sign calculator handles your birthplace’s time zone. “Cusp” does not mean two Sun signs.

Compare Pisces dates and Aries dates.

March 21 in UTC, 1950–2050
Year	Sun sign on March 21 (UTC)	Sun enters Aries (UTC)
1950	Pisces before 04:36 UTC; Aries from then onward	1950-03-21 04:36 UTC
1951	Pisces before 10:26 UTC; Aries from then onward	1951-03-21 10:26 UTC
1952	Aries all UTC day	1952-03-20 16:14 UTC
1953	Aries all UTC day	1953-03-20 22:01 UTC
1954	Pisces before 03:53 UTC; Aries from then onward	1954-03-21 03:53 UTC
1955	Pisces before 09:35 UTC; Aries from then onward	1955-03-21 09:35 UTC
1956	Aries all UTC day	1956-03-20 15:21 UTC
1957	Aries all UTC day	1957-03-20 21:17 UTC
1958	Pisces before 03:06 UTC; Aries from then onward	1958-03-21 03:06 UTC
1959	Pisces before 08:55 UTC; Aries from then onward	1959-03-21 08:55 UTC
1960	Aries all UTC day	1960-03-20 14:43 UTC
1961	Aries all UTC day	1961-03-20 20:33 UTC
1962	Pisces before 02:30 UTC; Aries from then onward	1962-03-21 02:30 UTC
1963	Pisces before 08:20 UTC; Aries from then onward	1963-03-21 08:20 UTC
1964	Aries all UTC day	1964-03-20 14:10 UTC
1965	Aries all UTC day	1965-03-20 20:05 UTC
1966	Pisces before 01:53 UTC; Aries from then onward	1966-03-21 01:53 UTC
1967	Pisces before 07:37 UTC; Aries from then onward	1967-03-21 07:37 UTC
1968	Aries all UTC day	1968-03-20 13:22 UTC
1969	Aries all UTC day	1969-03-20 19:08 UTC
1970	Pisces before 00:56 UTC; Aries from then onward	1970-03-21 00:56 UTC
1971	Pisces before 06:39 UTC; Aries from then onward	1971-03-21 06:39 UTC
1972	Aries all UTC day	1972-03-20 12:21 UTC
1973	Aries all UTC day	1973-03-20 18:13 UTC
1974	Pisces before 00:06 UTC; Aries from then onward	1974-03-21 00:06 UTC
1975	Pisces before 05:57 UTC; Aries from then onward	1975-03-21 05:57 UTC
1976	Aries all UTC day	1976-03-20 11:49 UTC
1977	Aries all UTC day	1977-03-20 17:43 UTC
1978	Aries all UTC day	1978-03-20 23:33 UTC
1979	Pisces before 05:22 UTC; Aries from then onward	1979-03-21 05:22 UTC
1980	Aries all UTC day	1980-03-20 11:10 UTC
1981	Aries all UTC day	1981-03-20 17:03 UTC
1982	Aries all UTC day	1982-03-20 22:56 UTC
1983	Pisces before 04:39 UTC; Aries from then onward	1983-03-21 04:39 UTC
1984	Aries all UTC day	1984-03-20 10:24 UTC
1985	Aries all UTC day	1985-03-20 16:15 UTC
1986	Aries all UTC day	1986-03-20 22:03 UTC
1987	Pisces before 03:52 UTC; Aries from then onward	1987-03-21 03:52 UTC
1988	Aries all UTC day	1988-03-20 09:39 UTC
1989	Aries all UTC day	1989-03-20 15:29 UTC
1990	Aries all UTC day	1990-03-20 21:20 UTC
1991	Pisces before 03:02 UTC; Aries from then onward	1991-03-21 03:02 UTC
1992	Aries all UTC day	1992-03-20 08:49 UTC
1993	Aries all UTC day	1993-03-20 14:41 UTC
1994	Aries all UTC day	1994-03-20 20:28 UTC
1995	Pisces before 02:15 UTC; Aries from then onward	1995-03-21 02:15 UTC
1996	Aries all UTC day	1996-03-20 08:04 UTC
1997	Aries all UTC day	1997-03-20 13:55 UTC
1998	Aries all UTC day	1998-03-20 19:55 UTC
1999	Pisces before 01:46 UTC; Aries from then onward	1999-03-21 01:46 UTC
2000	Aries all UTC day	2000-03-20 07:36 UTC
2001	Aries all UTC day	2001-03-20 13:31 UTC
2002	Aries all UTC day	2002-03-20 19:17 UTC
2003	Pisces before 01:00 UTC; Aries from then onward	2003-03-21 01:00 UTC
2004	Aries all UTC day	2004-03-20 06:49 UTC
2005	Aries all UTC day	2005-03-20 12:34 UTC
2006	Aries all UTC day	2006-03-20 18:25 UTC
2007	Pisces before 00:08 UTC; Aries from then onward	2007-03-21 00:08 UTC
2008	Aries all UTC day	2008-03-20 05:49 UTC
2009	Aries all UTC day	2009-03-20 11:45 UTC
2010	Aries all UTC day	2010-03-20 17:33 UTC
2011	Aries all UTC day	2011-03-20 23:21 UTC
2012	Aries all UTC day	2012-03-20 05:14 UTC
2013	Aries all UTC day	2013-03-20 11:02 UTC
2014	Aries all UTC day	2014-03-20 16:57 UTC
2015	Aries all UTC day	2015-03-20 22:45 UTC
2016	Aries all UTC day	2016-03-20 04:31 UTC
2017	Aries all UTC day	2017-03-20 10:29 UTC
2018	Aries all UTC day	2018-03-20 16:16 UTC
2019	Aries all UTC day	2019-03-20 21:58 UTC
2020	Aries all UTC day	2020-03-20 03:51 UTC
2021	Aries all UTC day	2021-03-20 09:38 UTC
2022	Aries all UTC day	2022-03-20 15:34 UTC
2023	Aries all UTC day	2023-03-20 21:25 UTC
2024	Aries all UTC day	2024-03-20 03:07 UTC
2025	Aries all UTC day	2025-03-20 09:02 UTC
2026	Aries all UTC day	2026-03-20 14:46 UTC
2027	Aries all UTC day	2027-03-20 20:25 UTC
2028	Aries all UTC day	2028-03-20 02:17 UTC
2029	Aries all UTC day	2029-03-20 08:02 UTC
2030	Aries all UTC day	2030-03-20 13:52 UTC
2031	Aries all UTC day	2031-03-20 19:41 UTC
2032	Aries all UTC day	2032-03-20 01:22 UTC
2033	Aries all UTC day	2033-03-20 07:24 UTC
2034	Aries all UTC day	2034-03-20 13:18 UTC
2035	Aries all UTC day	2035-03-20 19:04 UTC
2036	Aries all UTC day	2036-03-20 01:03 UTC
2037	Aries all UTC day	2037-03-20 06:51 UTC
2038	Aries all UTC day	2038-03-20 12:41 UTC
2039	Aries all UTC day	2039-03-20 18:32 UTC
2040	Aries all UTC day	2040-03-20 00:12 UTC
2041	Aries all UTC day	2041-03-20 06:07 UTC
2042	Aries all UTC day	2042-03-20 11:53 UTC
2043	Aries all UTC day	2043-03-20 17:28 UTC
2044	Aries all UTC day	2044-03-19 23:21 UTC
2045	Aries all UTC day	2045-03-20 05:07 UTC
2046	Aries all UTC day	2046-03-20 10:58 UTC
2047	Aries all UTC day	2047-03-20 16:53 UTC
2048	Aries all UTC day	2048-03-19 22:34 UTC
2049	Aries all UTC day	2049-03-20 04:29 UTC
2050	Aries all UTC day	2050-03-20 10:20 UTC

How these dates are calculated

Each tropical sign occupies 30° of ecliptic longitude, starting at the March equinox. We search the Sun’s apparent geocentric longitude with Astronomy Engine, using the same calculation as our Sun sign calculator. Times are rounded to the nearest minute; they are calculated estimates, not second-level guarantees. See our methodology and published JPL comparison.

All dates in these tables use UTC. A local birthday can fall on a different UTC date. For a personal answer near a boundary, enter your birth date, time and place in the calculator. At the transition the new sign begins; a person has one tropical Sun sign.

Tropical signs are equal sectors tied to the seasons, not the unequal astronomical constellations. Precession changes their alignment. These tables do not give IAU constellation crossing dates or sidereal signs.

Browse all zodiac dates and boundary birthdays

Astrology is a symbolic and cultural tradition. The planetary positions on this site are calculated with astronomical accuracy; the interpretations describe what astrologers associate with them and are not scientifically validated predictions about personality, relationships or the future.