♓︎ Pisces · ♈︎ Aries

March 21 Zodiac Sign: Pisces or Aries — Traits

The March 21 zodiac sign is Pisces or Aries, depending on the year and the time of birth. The Sun leaves Pisces for Aries on or about March 21, at a different moment each year, so a birth on this date can fall either side of the change. Pisces is a mutable water sign and Aries is a cardinal fire sign. In 2026 the Sun is in Aries throughout March 21 (UTC). The year-by-year list further down shows which.

Gary Oldman, Matthew Broderick and Ronaldinho were born on March 21. StarMap has birth charts for 18 people born on this date, listed here with the best known first.

The stars over any place on March 21 stand differently in every year and at every hour: see the sky on this date for a year, a time and a place of your choosing, drawn as a star map.

Pisces or Aries traits

If your Sun is in Pisces: You feel it all. Imagination, empathy and a porous sense of where you end and others begin make you the person people confide in. A Pisces Sun needs boundaries as much as it needs the sea.

If your Sun is in Aries: You start things. Your energy is direct and impatient with delay, and you are most yourself when there is something to go first at. The work of an Aries Sun is finishing what the spark began.

Your Sun sign is one part of a chart. The Moon and the rising sign, which need the time and place of birth, say as much about you. StarMap is for entertainment and self-reflection.

Born on March 21? Find out which side of the change you are on.

Your Sun, Moon and rising sign from the real sky at your birth. Free, no account needed.

Famous birthdays on March 21

Gary Oldman, Matthew Broderick and Ronaldinho were born on March 21. StarMap has birth charts for 18 people born on this date, the best known first.

March 21, year by year: Pisces or Aries

Times are UTC. A birth in another time zone happened at a different clock time, so within a few hours of the change the place of birth decides the sign as much as the hour does. A chart drawn from the full birth details settles it.

Years in which the Sun entered Aries on March 21

1900 at 01:39
1901 at 07:23
1902 at 13:16
1903 at 19:15
1904 at 00:58
1905 at 06:57
1906 at 12:52
1907 at 18:33
1908 at 00:27
1909 at 06:13
1910 at 12:02
1911 at 17:54
1913 at 05:18
1914 at 11:10
1915 at 16:51
1917 at 04:37
1918 at 10:25
1919 at 16:19
1921 at 03:51
1922 at 09:48
1923 at 15:28
1925 at 03:11
1926 at 09:01
1927 at 14:59
1929 at 02:35
1930 at 08:29
1931 at 14:06
1933 at 01:43
1934 at 07:27
1935 at 13:18
1937 at 00:45
1938 at 06:42
1939 at 12:28
1941 at 00:20
1942 at 06:10
1943 at 12:02
1946 at 05:32
1947 at 11:12
1950 at 04:34
1951 at 10:26
1954 at 03:53
1955 at 09:35
1958 at 03:05
1959 at 08:54
1962 at 02:29
1963 at 08:19
1966 at 01:52
1967 at 07:37
1970 at 00:56
1971 at 06:38
1974 at 00:06
1975 at 05:56
1979 at 05:22
1983 at 04:38
1987 at 03:52
1991 at 03:02
1995 at 02:14
1999 at 01:46
2003 at 01:00
2007 at 00:07

Aries all day: 1912, 1916, 1920, 1924, 1928, 1932, 1936, 1940, 1944, 1945, 1948, 1949, 1952, 1953, 1956, 1957, 1960, 1961, 1964, 1965, 1968, 1969, 1972, 1973, 1976, 1977, 1978, 1980, 1981, 1982, 1984, 1985, 1986, 1988, 1989, 1990, 1992, 1993, 1994, 1996, 1997, 1998, 2000, 2001, 2002, 2004, 2005, 2006, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026.

Signs are computed from the Sun’s position with the astronomy-engine ephemeris, checked against Swiss Ephemeris, for every year from 1900 to 2026. Birth dates and places come from Wikidata. A sign is shown beside a name only when it holds for the whole of the birth date; where it does not, both possibilities are given. How to read a birth chart.

Photo credits (17 photos from Wikimedia Commons)

Each link opens the photo’s page on Wikimedia Commons, which states its author and licence.