♓︎ Sun at ~27° Pisces · third decan · Mars

March 18 zodiac sign: Pisces, not Aries

If you were born on March 18, your sign is Pisces, not Aries: from 1980 to 2030 the Sun always enters Aries on March 20 or 21, so this date is Pisces at any hour. The Sun sits about 27° into Pisces on this date, in the third decan, where Pisces's core takes on a Mars flavour. Here's what the date fixes, and what only your birth time can tell you.

Your sign: Pisces

The mutable water sign that dissolves boundaries and feels what others don't even notice.

A Pisces Sun is built around empathy and imagination. You feel things that haven't been said. You read the room, the energy, the unspoken — and you're often right. This intuition is real, and it makes you formidable in any creative or healing field that rewards seeing what's beneath the surface.

The date fixes the Sun; the hour fixes the rest. A Pisces born March 18 around sunset has Virgo rising, and a different first impression from one born at dawn. Your rising sign needs the birth time; the twelve Pisces Sun combinations show what each one changes.

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

In the US (2000–2014), an average of 10,939 babies were born on each March 18, rank 302 of 366 dates; Pisces is number 9 of 12 signs (8.04%). What's the most common zodiac sign?

The Moon on March 18, 1980–2030

Across the 51 years from 1980 to 2030, the Moon at noon UTC on March 18 was most often in Aries and Virgo (6 years each) and least often in Gemini, Cancer, and Sagittarius (3 years each). Unlike the Sun, the Moon sign depends on the birth year. On March 18, 2026, the Moon stays in Pisces the whole UTC day.

In 26 of those 51 years (51%) the Moon changed sign during March 18 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 18 in 1992, 2003, and 2022, and new in 1988.

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 third decan of Pisces

Each sign is divided into three 10° decans, and each decan has a sub-ruler that shades the sign's core. Degrees 20–30 of Pisces belong to Mars: your drive — how you take action, what makes you angry, and what you fight for. Read it as Pisces with a Mars accent — the water core is unchanged, the emphasis moves.

Decan tarot card · Golden Dawn attribution

Ten of Cups

Harmony · Family joy · Fulfilment. 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 Ten of Cups in full on My Day Check →

All the tarot cards for March 18: 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 Pisceans born on March 18 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 18? 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: Pisces Sun with each Moon → · just my Moon sign · how the free birth chart calculator works

Classic matches for a March 18 birthday

By sun sign, Pisces pairs most easily with Cancer, Scorpio, Taurus, Capricorn. Sun-sign compatibility is the coarse layer; the couple reading compares both full charts.

Common questions

What zodiac sign is March 18?

March 18 is Pisces, the mutable water sign ruled by Neptune. The Sun sits at roughly 27° Pisces on this date, in the third decan.

What decan is March 18?

The third decan of Pisces (20°–30°), 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 18?

In the Golden Dawn system each decan has a minor arcana card: for the third decan of Pisces it is the Ten of Cups (harmony, family joy, fulfilment). 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 18?

It depends on the year, and in 51% of years on the hour too. For example: in 1980, Aries; in 1990, Sagittarius; in 2000, Leo or Virgo; in 2010, Aries or Taurus; in 2020, Capricorn. Over 1980–2030 the Moon on March 18 was most often in Aries and Virgo. A birth time and place pin it down.

Does everyone born on March 18 have the same chart?

No. They share the Sun in 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 18 in different years can have almost nothing else in common in their charts.