In love
Pursues openly and dislikes ambiguity. Wants a partner who can hold their own ground rather than yield.
Boundary date · 8 switches since 1930
March 21 zodiac sign: Aries or Pisces?
The March 21 zodiac sign is Aries in 96% of years from 1930 to 2029 and Pisces in 4% — the date sits on a sign boundary, so the honest answer needs your birth year.
- Sun sign
- Aries 96% of years · Pisces 4%
- US births a day
- 11,540 #130 of 366 dates
- Day of the year
- 80th 81st in leap years
- Sun at noon 2026
- 0°52′ of Aries
Births: US Social Security Administration 2000–2014. Sun: NASA JPL DE440.
How common is this birthday
March 21 among the 366 days
March 21 averages 11,540 births a day in the US — the 130th most common of the 366 dates, 1.7% above the average day. The deep dips are holidays.
18 pages · printable
The 2027 Sky Calendar — free PDF
Every retrograde, eclipse, new and full moon of 2027 to the minute, already converted to your city. A month to a page, ready to print.
Which sign, by birth year
- Aries at midday UTC
- Pisces at midday UTC
- Sign changed during the day (UTC)
- 2026
Aries at midday UTC in 96 years and Pisces in 4: 1931, 1935, 1939 and 1943. In 35 of the years — dotted — the Sun entered Aries during March 21 itself, so a birth that day can be either sign depending on the hour.
- Aries
- 2026
In none of the years 2014–2034 did the change fall inside March 21 itself.
Mars-ruled decan of Aries
Decan
1 of 3 · 0°–10°
Sub-ruler
Mars
Sign ruler
Mars
Sun at noon, 2026
0°52′
March 21 is the first full day of Aries in 2026 — the Sun crossed in at 2:46 PM UTC on March 20 — and the Mars decan runs on until March 30.
Mars pushes the sign toward friction and initiative — the part of it that acts before it checks. In its first ten degrees Aries shows in its rawest form: Pisces has only just handed over, and nothing of the new sign has worn down yet.
Personality
March 21 birthday personality
People born on March 21 are Aries in most years, and the sign is read as initiative, appetite and the willingness to go first. Starts things other people are still discussing. Recovers from setbacks faster than almost any other sign.
The 21st reduces to 3 and combines 2 (sensitivity) with 1 (originality). Numerologists read it as sociable creativity: those born on this day are imaginative, expressive and good at connecting with people, frequently with a talent for writing, speaking or performing. Birthday number 21 in full →
At work
Best at launching. Loses interest in maintenance, so pairs well with a sign that finishes things.
Stone and flower
The March birthstone is aquamarine (pale blue to sea green), and the month's flowers are the daffodil and jonquil.
Look up your birth year
Every year, computed
All 100 years for March 21. Each row is calculated for that exact day — sun position, life path, the Moon's sign and nakshatra, and which planets were retrograde. Find your year.
| Year | Sun | Life path | Moon | Nakshatra | Retrograde |
|---|---|---|---|---|---|
| 1930 | Aries 0.15° | 1 | Sagittarius | Mula 1 | — |
| 1931 | Pisces 29.91° | 11 | Aries | Ashwini 1 | — |
| 1932 | Aries 0.67° | 3 | Virgo | Purva Phalguni 4 | Jupiter |
| 1933 | Aries 0.43° | 4 | Aquarius | Shravana 1 | Mercury Mars Jupiter |
| 1934 | Aries 0.19° | 5 | Gemini | Rohini 3 | Jupiter |
| 1935 | Pisces 29.95° | 6 | Libra | Hasta 4 | Mars Jupiter |
| 1936 | Aries 0.71° | 7 | Pisces | Shatabhisha 3 | — |
| 1937 | Aries 0.47° | 8 | Cancer | Punarvasu 4 | — |
| 1938 | Aries 0.22° | 9 | Sagittarius | Anuradha 2 | — |
| 1939 | Pisces 29.98° | 1 | Aries | Uttara Bhadrapada 3 | — |
| 1940 | Aries 0.73° | 11 | Leo | Magha 2 | Mercury |
| 1941 | Aries 0.48° | 3 | Capricorn | Purva Ashadha 4 | — |
| 1942 | Aries 0.24° | 4 | Taurus | Krittika 1 | — |
| 1943 | Pisces 29.99° | 5 | Virgo | Uttara Phalguni 2 | — |
| 1944 | Aries 0.75° | 6 | Aquarius | Dhanishta 1 | Jupiter |
| 1945 | Aries 0.51° | 7 | Cancer | Ardra 3 | Jupiter |
| 1946 | Aries 0.27° | 8 | Scorpio | Swati 4 | Mercury Jupiter |
| 1947 | Aries 0.03° | 9 | Pisces | Purva Bhadrapada 1 | Mercury Jupiter Saturn |
| 1948 | Aries 0.79° | 1 | Leo | Ashlesha 1 | Mars Saturn |
| 1949 | Aries 0.55° | 11 | Sagittarius | Mula 3 | Saturn |
| 1950 | Aries 0.31° | 3 | Taurus | Ashwini 3 | Mars Saturn |
| 1951 | Aries 0.07° | 4 | Virgo | Magha 4 | Saturn |
| 1952 | Aries 0.82° | 5 | Aquarius | Uttara Ashadha 4 | Saturn |
| 1953 | Aries 0.58° | 6 | Gemini | Mrigashira 2 | Mercury Saturn |
| 1954 | Aries 0.34° | 7 | Libra | Chitra 2 | Saturn |
| 1955 | Aries 0.1° | 8 | Aquarius | Dhanishta 3 | Saturn |
| 1956 | Aries 0.85° | 9 | Cancer | Punarvasu 4 | Jupiter Saturn |
| 1957 | Aries 0.61° | 1 | Sagittarius | Jyeshtha 1 | Jupiter |
| 1958 | Aries 0.37° | 11 | Aries | Revati 1 | Jupiter |
| 1959 | Aries 0.13° | 3 | Leo | Ashlesha 2 | Mercury Jupiter |
| 1960 | Aries 0.88° | 4 | Capricorn | Purva Ashadha 4 | Mercury |
| 1961 | Aries 0.64° | 5 | Gemini | Krittika 4 | Venus |
| 1962 | Aries 0.39° | 6 | Libra | Uttara Phalguni 4 | — |
| 1963 | Aries 0.15° | 7 | Aquarius | Shravana 1 | — |
| 1964 | Aries 0.9° | 8 | Cancer | Ardra 3 | — |
| 1965 | Aries 0.66° | 9 | Scorpio | Vishakha 3 | Mars |
| 1966 | Aries 0.42° | 1 | Pisces | Purva Bhadrapada 3 | Mercury |
| 1967 | Aries 0.18° | 11 | Cancer | Punarvasu 4 | Mars |
| 1968 | Aries 0.94° | 3 | Capricorn | Mula 3 | Jupiter |
| 1969 | Aries 0.7° | 4 | Taurus | Bharani 2 | Venus Jupiter |
| 1970 | Aries 0.46° | 5 | Virgo | Purva Phalguni 2 | Jupiter |
| 1971 | Aries 0.22° | 6 | Capricorn | Purva Ashadha 4 | — |
| 1972 | Aries 0.98° | 7 | Gemini | Mrigashira 2 | — |
| 1973 | Aries 0.74° | 8 | Scorpio | Swati 1 | Mercury |
| 1974 | Aries 0.49° | 9 | Pisces | Shatabhisha 1 | — |
| 1975 | Aries 0.25° | 1 | Cancer | Ardra 3 | — |
| 1976 | Aries 1° | 11 | Sagittarius | Jyeshtha 2 | Saturn |
| 1977 | Aries 0.76° | 3 | Aries | Revati 4 | Venus Saturn |
| 1978 | Aries 0.51° | 4 | Leo | Ashlesha 4 | Saturn |
| 1979 | Aries 0.27° | 5 | Capricorn | Mula 3 | Mercury Jupiter Saturn |
| 1980 | Aries 1.03° | 6 | Gemini | Rohini 1 | Mars Jupiter Saturn |
| 1981 | Aries 0.78° | 7 | Libra | Hasta 3 | Jupiter Saturn |
| 1982 | Aries 0.54° | 8 | Aquarius | Shravana 3 | Mars Jupiter Saturn |
| 1983 | Aries 0.3° | 9 | Gemini | Mrigashira 2 | Saturn |
| 1984 | Aries 1.06° | 1 | Scorpio | Vishakha 4 | Saturn |
| 1985 | Aries 0.82° | 11 | Aries | Uttara Bhadrapada 2 | Venus Saturn |
| 1986 | Aries 0.58° | 3 | Leo | Pushya 2 | Mercury Saturn |
| 1987 | Aries 0.34° | 4 | Sagittarius | Jyeshtha 2 | — |
| 1988 | Aries 1.09° | 5 | Taurus | Bharani 3 | — |
| 1989 | Aries 0.85° | 6 | Virgo | Uttara Phalguni 1 | — |
| 1990 | Aries 0.61° | 7 | Capricorn | Uttara Ashadha 1 | — |
| 1991 | Aries 0.37° | 8 | Gemini | Rohini 2 | Jupiter |
| 1992 | Aries 1.12° | 9 | Scorpio | Swati 3 | Mercury Jupiter |
| 1993 | Aries 0.88° | 1 | Pisces | Shatabhisha 4 | Mercury Venus Jupiter |
| 1994 | Aries 0.64° | 11 | Cancer | Ardra 4 | Jupiter |
| 1995 | Aries 0.4° | 3 | Scorpio | Anuradha 1 | Mars |
| 1996 | Aries 1.16° | 4 | Aries | Ashwini 2 | — |
| 1997 | Aries 0.91° | 5 | Virgo | Magha 3 | Mars |
| 1998 | Aries 0.67° | 6 | Capricorn | Mula 3 | — |
| 1999 | Aries 0.42° | 7 | Taurus | Krittika 1 | Mercury Mars |
| 2000 | Aries 1.18° | 8 | Libra | Chitra 1 | — |
| 2001 | Aries 0.93° | 9 | Aquarius | Dhanishta 2 | Venus |
| 2002 | Aries 0.69° | 1 | Gemini | Mrigashira 2 | — |
| 2003 | Aries 0.46° | 11 | Scorpio | Swati 4 | Jupiter |
| 2004 | Aries 1.21° | 3 | Aries | Uttara Bhadrapada 4 | Jupiter |
| 2005 | Aries 0.97° | 4 | Leo | Ashlesha 1 | Mercury Jupiter Saturn |
| 2006 | Aries 0.73° | 5 | Sagittarius | Jyeshtha 2 | Mercury Jupiter Saturn |
| 2007 | Aries 0.49° | 6 | Taurus | Ashwini 4 | Saturn |
| 2008 | Aries 1.25° | 7 | Virgo | Uttara Phalguni 3 | Saturn |
| 2009 | Aries 1° | 8 | Aquarius | Uttara Ashadha 4 | Venus Saturn |
| 2010 | Aries 0.76° | 9 | Gemini | Rohini 1 | Saturn |
| 2011 | Aries 0.52° | 1 | Libra | Chitra 3 | Saturn |
| 2012 | Aries 1.27° | 11 | Pisces | Purva Bhadrapada 2 | Mercury Mars Saturn |
| 2013 | Aries 1.03° | 3 | Cancer | Punarvasu 2 | Saturn |
| 2014 | Aries 0.79° | 4 | Scorpio | Anuradha 1 | Mars Saturn |
| 2015 | Aries 0.55° | 5 | Aries | Revati 2 | Jupiter Saturn |
| 2016 | Aries 1.3° | 6 | Virgo | Purva Phalguni 1 | Jupiter |
| 2017 | Aries 1.06° | 7 | Capricorn | Purva Ashadha 1 | Venus Jupiter |
| 2018 | Aries 0.82° | 8 | Taurus | Bharani 4 | Jupiter |
| 2019 | Aries 0.58° | 9 | Libra | Hasta 1 | Mercury |
| 2020 | Aries 1.33° | 1 | Aquarius | Dhanishta 4 | — |
| 2021 | Aries 1.09° | 11 | Gemini | Mrigashira 4 | — |
| 2022 | Aries 0.85° | 3 | Scorpio | Swati 4 | — |
| 2023 | Aries 0.6° | 4 | Pisces | Uttara Bhadrapada 1 | — |
| 2024 | Aries 1.36° | 5 | Leo | Ashlesha 3 | — |
| 2025 | Aries 1.12° | 6 | Sagittarius | Jyeshtha 3 | Mercury Venus |
| 2026 | Aries 0.88° | 7 | Taurus | Ashwini 3 | — |
| 2027 | Aries 0.65° | 8 | Virgo | Purva Phalguni 4 | Mars Jupiter |
| 2028 | Aries 1.4° | 9 | Aquarius | Shravana 2 | Jupiter |
| 2029 | Aries 1.16° | 1 | Gemini | Rohini 2 | Mars Jupiter |
The Moon and nakshatra columns change every year because the Moon returns to the same calendar date in a different position — which is why a birth date alone cannot tell you those, and why this table exists.
A century of March 21
Day of the year
81 of 366
Mercury was retrograde on this date in
19 of 100 years
(19%)
Latest of those, to 2029
1999, 2005, 2006, 2012, 2019, 2025
Full moon fell on this date in
6 years — 1943, 1962, 1981, 1989, 2008, 2019
Most frequent moon phase
Waning Crescent · 19 years
Counted for March 21 alone, at noon UTC in each year from 1930 to 2029. Why the counts differ from date to date →
Year by year
2006
Aries
life path 5
2007
Aries
life path 6
2008
Aries
life path 7
2009
Aries
life path 8
2010
Aries
life path 9
2011
Aries
life path 1
2012
Aries
life path 11
2013
Aries
life path 3
2014
Aries
life path 4
2015
Aries
life path 5
2016
Aries
life path 6
2017
Aries
life path 7
2018
Aries
life path 8
2019
Aries
life path 9
2020
Aries
life path 1
2021
Aries
life path 11
2022
Aries
life path 3
2023
Aries
life path 4
2024
Aries
life path 5
2025
Aries
life path 6
2026
Aries
life path 7
2027
Aries
life path 8
2028
Aries
life path 9
2029
Aries
life path 1
The sign changes from one year to the next in some of these tiles — that is the boundary at work.
Life path numbers this date produces
1
12 years · 12%
11
11 years · 11%
3
11 years · 11%
4
11 years · 11%
5
11 years · 11%
6
11 years · 11%
7
11 years · 11%
8
11 years · 11%
9
11 years · 11%
The most frequent is 1 with 12 years; every other number, 11 included, turns up in 11 years. And this date can carry a master number: 11 in 11 of those years — kept whole rather than reduced. Why 11, 22 and 33 are treated differently →
Why the answer moves
There is no third sign and no blend — at your moment of birth the Sun was one side of the boundary or the other. For March 21 that came out Aries in 96% of years and Pisces in 4%. The noon sign switched 8 times between 1930 and 2029; the last three switches fall in 1940, 1943 and 1944.
Questions about March 21 birthdays
What zodiac sign is March 21?
Usually Aries: 96% of years from 1930 to 2029. In the other 4% of years (the last of them 1943) the Sun was still in Pisces at midday UTC, and in 35 of the 100 years it changed sign during the day itself, so the birth hour decides.
What life path numbers does March 21 produce?
Across 100 birth years the most common is 1 (12 years); every other number appears in 11 years.
Which decan is March 21?
In 2026, the 1st decan of Aries, 0° to 10°, sub-ruled by Mars in the Chaldean order.
Can March 21 be a master number birth date?
Yes — 11, in 11 of the 100 years: 1931, 1940, 1949, 1958, 1967, 1976, 1985, 1994, 2003, 2012 and 2021.
Cite this page
AstroHot. “March 21 Zodiac Sign: Aries or Pisces? By Birth Year.” Accessed October 28, 2026. https://astrohot.com/birthday/march-21/
For Wikipedia
{{cite web |title=March 21 Zodiac Sign: Aries or Pisces? By Birth Year |url=https://astrohot.com/birthday/march-21/ |website=AstroHot |access-date=2026-10-28}}