♈︎ Sun at ~0° Aries · first decan · Mars

March 21 zodiac sign: Pisces or Aries?

If you were born on March 21, you're Pisces or Aries depending on the time: Pisces before the Sun enters Aries, Aries after. The Sun crosses from one sign to the other on this date in 7 of the 51 years from 1980 to 2030, and the minute shifts from year to year (2026: March 20, 14:45 UTC). At noon UTC it's Aries in 100% of years; the exact minute of the change for every year is below.

Pisces or Aries? Check your year

The Sun's entry into Aries shifts by a few hours from year to year. Find your birth year, convert your birth time to UTC, and compare: born before the time shown, you're Pisces; after it, Aries. Years missing from the list had the crossing on a neighbouring day (the Sun was in one sign for the whole of March 21).

1983 04:38 UTC1987 03:51 UTC1991 03:02 UTC1995 02:14 UTC1999 01:45 UTC2003 01:00 UTC2007 00:07 UTC

Not sure about the time zone or the minutes? Compute your chart — it does the conversion and settles the sign. Or read the Pisces–Aries cusp: which are you?

Your sign: Aries (or Pisces)

The first sign of the zodiac — initiator, fighter, and patron of fresh starts.

If your Sun is in Aries, your core identity is built around action. You feel most yourself when you're starting something — a project, a fight, a workout, a brand-new chapter. You hate stagnation more than you hate failure. The slow consensus-building meetings and the relationships that need careful tending? That's not where you shine. You shine in the opening move, the new venture, the moment someone needs to just decide already.

The date fixes the Sun; the year and hour fix the rest. A Aries born March 21 with the Moon in Gemini runs on a different inner weather from one with the Moon in Aries: see Aries Sun, Gemini Moon. Your rising sign needs the birth time; the twelve Aries Sun combinations show what each one changes.

Aries dates, traits & compatibility → · What a Aries birth chart looks like → · Pisces dates and traits →

In the US (2000–2014), an average of 11,540 babies were born on each March 21, rank 130 of 366 dates; Aries is number 8 of 12 signs (8.14%). What's the most common zodiac sign?

The Moon on March 21, 1980–2030

Across the 51 years from 1980 to 2030, the Moon at noon UTC on March 21 was most often in Gemini (7 years) and least often in Cancer (2 years). Unlike the Sun, the Moon sign depends on the birth year. On March 21, 2026, the Moon moves from Aries into Taurus at 06:35 UTC.

In 20 of those 51 years (39%) the Moon changed sign during March 21 itself, so in those years the birth time decides the Moon as well as the rising sign. Cells with an arrow mark them, with the UTC time of the change. The Moon was exactly full on March 21 in 2008 and 2019, and new in 1985 and 2023.

Find your birth year. One sign means the Moon spent the whole UTC day there; an arrow means it changed sign that day, at the UTC time shown: born before it, the first sign; after it, the second. The Moon sign calculator settles it in seconds; your birth chart adds the rising sign and houses.

Times in UTC: a birth late in the evening in the Americas, or early in the morning in Asia, can fall on the neighbouring UTC date.

March 2026: full moon March 3, 2026, Virgo · new moon March 19, 2026, Pisces.

Your decan: the first decan of Aries

Each sign is divided into three 10° decans, and each decan has a sub-ruler that shades the sign's core. Degrees 0–10 of Aries belong to Mars: your drive — how you take action, what makes you angry, and what you fight for. Read it as Aries with a Mars accent — the fire core is unchanged, the emphasis moves.

Decan tarot card · Golden Dawn attribution

Two of Wands

Planning · Decisions · Discovery. The card assigned to this ten-degree slice of the zodiac — a birthday card in the same sense a sun sign is a birthday sign: one lens on the date, not a verdict.

Read the Two of Wands in full on My Day Check →

All the tarot cards for March 21: decan, sign, ruling planet and year card →

What the date can't tell you

The Sun is one placement out of ten. Your Moon sign changes every two to three days, so Aries born on March 21 in different years have different Moons; your rising sign changes every two hours and needs a birth time and place. Those two carry most of what people mean by "personality" in a chart.

Born March 21? Add your year, time and place

Your Moon and rising depend on the year and hour. Computed here in a few seconds — then your full chart with a preview of its reading, no sign-up.

Or browse the twelve possibilities: Aries Sun with each Moon → · just my Moon sign · how the free birth chart calculator works

Classic matches for a March 21 birthday

By sun sign, Aries pairs most easily with Leo, Sagittarius, Gemini, Aquarius. Sun-sign compatibility is the coarse layer; the couple reading compares both full charts.

Common questions

Is March 21 Pisces or Aries?

Both are possible. On March 21 the Sun moves from Pisces into Aries in most years, at a time that ranges from 00:07 UTC to 04:38 UTC UTC across 1980–2030 (in some years the crossing falls on the neighbouring day). Convert your birth time to UTC and compare it with the crossing for your year in the table above — before it you're Pisces, after it Aries.

What zodiac sign is March 21?

March 21 is a cusp day between Pisces and Aries; at noon UTC it falls in Aries in 100% of years between 1980 and 2030. Your birth year and hour decide it.

What decan is March 21?

The first decan of Aries (0°–10°), sub-ruled by Mars. Decans divide each sign into three 10° slices; the sub-ruler adds a second flavour to the sign's core — here your drive — how you take action, what makes you angry, and what you fight for.

What tarot card is March 21?

In the Golden Dawn system each decan has a minor arcana card: for the first decan of Aries it is the Two of Wands (planning, decisions, discovery). It's a birthday card in the same way a sun sign is — one lens, not a verdict.

What Moon sign is someone born on March 21?

It depends on the year, and in 39% of years on the hour too. For example: in 1980, Taurus or Gemini; in 1990, Capricorn; in 2000, Libra; in 2010, Taurus or Gemini; in 2020, Aquarius or Pisces. Over 1980–2030 the Moon on March 21 was most often in Gemini. A birth time and place pin it down.

Does everyone born on March 21 have the same chart?

No. They share the Sun in Aries or Pisces, but the Moon changes sign every two to three days, the rising sign every two hours, and the outer planets by year. Two people born March 21 in different years can have almost nothing else in common in their charts.