March 21 zodiac sign: Pisces or Aries?
March 21 can be Pisces or Aries. The Sun enters Aries around this date at a different moment every year, so the answer depends on the year you were born, the time and the time zone.
Times in Eastern Time (ET)
In Eastern Time (ET), from 1925 to 2030, the Sun entered Aries on March 21 in 20 of the 106 years. March 21 was Pisces all day in no year and Aries all day in 86 years.
Your birth year
In 2026, March 21 was Aries all day in Eastern Time (ET). The Sun had entered Aries on Mar 20, 2026, 10:46 AM.
Years when the Sun changed sign on March 21
Born before the time shown: Pisces. Born after it: Aries. Within a minute or two of it, only an exact birth time can decide. Times in Eastern Time (ET).
| Year | The Sun enters Aries |
|---|---|
| 1926 | |
| 1927 | |
| 1930 | |
| 1931 | |
| 1934 | |
| 1935 | |
| 1938 | |
| 1939 | |
| 1942 | |
| 1943 | |
| 1946 | |
| 1947 | |
| 1951 | |
| 1955 | |
| 1959 | |
| 1963 | |
| 1967 | |
| 1971 | |
| 1975 | |
| 1979 |
Aries all day on March 21: 1925, 1928–1929, 1932–1933, 1936–1937, 1940–1941, 1944–1945, 1948–1950, 1952–1954, 1956–1958, 1960–1962, 1964–1966, 1968–1970, 1972–1974, 1976–1978, 1980–2030.
Where the Sun stands on March 21
At any hour of March 21 in Eastern Time (ET), in any year from 1925 to 2030, the Sun stood between 29°35′ Pisces and 2°03′ Aries.
- 29°35′ Pisces to 30°00′ Pisces: the third decan of Pisces, in the term of Saturn.
- 0°00′ Aries to 2°03′ Aries: the first decan of Aries, in the term of Jupiter.
Decans are the three 10° thirds of a sign. Terms, also called bounds, divide each sign unequally among the five planets; these are the Egyptian terms as Ptolemy tabulates them (Tetrabiblos I.20).
In other time zones
In how many years from 1925 to 2030 the change fell on March 21 in local time, with each place's daylight-saving rules as they were then.
| Time zone | Change on March 21 | Pisces all day | Aries all day |
|---|---|---|---|
| Honolulu | 7 | 0 | 99 |
| Los Angeles | 12 | 0 | 94 |
| Denver | 15 | 0 | 91 |
| Chicago | 18 | 0 | 88 |
| New York | 20 | 0 | 86 |
| London | 41 | 0 | 65 |
| Berlin | 42 | 0 | 64 |
| India (Kolkata) | 62 | 0 | 44 |
| Tokyo | 76 | 0 | 30 |
| Sydney | 81 | 2 | 23 |
| Auckland | 83 | 5 | 18 |
What the two signs mean
Know your birth time and place? Your birth chart gives the exact answer.
How this is computed
Each time is the moment the Sun's ecliptic longitude crosses the boundary between the two signs. Our engine computes it, and for every year from 1920 to 2035 it agrees with Swiss Ephemeris outputs within a minute, and with the U.S. Naval Observatory's published equinoxes and solstices within their printed minute. A birth within a minute or two of the time shown needs a more exact recorded time than most birth records give.
A date is a calendar date in one time zone. Each zone's rules are used as they were at the time, daylight saving included, from the IANA time-zone database. The page is written in Eastern Time (ET); your browser can show your own zone.
Astrology is a symbolic language, not a science. This page is about where the Sun was, which is astronomy. What each sign means is on the pages linked above.