♍︎ Sun at ~25° Virgo · third decan · Mercury

September 18 zodiac sign: Virgo, third decan

If you were born on September 18, your sign is Virgo, the earth sign ruled by Mercury: the Sun is in Virgo on this date in every year from 1980 to 2030. The Sun sits about 25° into Virgo on this date, in the third decan, where Virgo's core takes on a Mercury flavour. Here's what the date fixes, and what only your birth time can tell you.

Your sign: Virgo

The mutable earth sign that notices everything and refines until it works.

A Virgo Sun has an analytical mind paired with a service orientation — a rare combination. You're the person who actually reads the manual, who notices what's off in the system, who stays late to make sure the thing works the way it's supposed to. You're not loud about it. You just do the work.

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

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

In the US (2000–2014), an average of 12,426 babies were born on each September 18, rank 7 of 366 dates; Virgo is number 2 of 12 signs (8.94%). What's the most common zodiac sign?

The Moon on September 18, 1980–2030

Across the 51 years from 1980 to 2030, the Moon at noon UTC on September 18 was most often in Aries, Taurus, Gemini, Virgo, Libra, and Aquarius (5 years each) and least often in Cancer, Leo, and Pisces (3 years each). Unlike the Sun, the Moon sign depends on the birth year. On September 18, 2026, the Moon stays in Sagittarius the whole UTC day.

In 19 of those 51 years (37%) the Moon changed sign during September 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 September 18 in 1986, 2005, and 2024, and new in 2009 and 2028.

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.

September 2026: full moon September 26, 2026, Aries · new moon September 11, 2026, Virgo.

Your decan: the third decan of Virgo

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 Virgo belong to Mercury: how you think, learn, communicate, and process information. Read it as Virgo with a Mercury accent — the earth core is unchanged, the emphasis moves.

Decan tarot card · Golden Dawn attribution

Ten of Pentacles

Legacy · Wealth · Family. 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 Pentacles in full on My Day Check →

All the tarot cards for September 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 Virgos born on September 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 September 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: Virgo Sun with each Moon → · just my Moon sign · how the free birth chart calculator works

Classic matches for a September 18 birthday

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

Common questions

What zodiac sign is September 18?

September 18 is Virgo, the mutable earth sign ruled by Mercury. The Sun sits at roughly 25° Virgo on this date, in the third decan.

What decan is September 18?

The third decan of Virgo (20°–30°), sub-ruled by Mercury. Decans divide each sign into three 10° slices; the sub-ruler adds a second flavour to the sign's core — here how you think, learn, communicate, and process information.

What tarot card is September 18?

In the Golden Dawn system each decan has a minor arcana card: for the third decan of Virgo it is the Ten of Pentacles (legacy, wealth, family). 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 September 18?

It depends on the year, and in 37% of years on the hour too. For example: in 1980, Capricorn; in 1990, Virgo; in 2000, Taurus; in 2010, Capricorn or Aquarius; in 2020, Libra. Over 1980–2030 the Moon on September 18 was most often in Aries, Taurus, Gemini, Virgo, Libra, and Aquarius. A birth time and place pin it down.

Does everyone born on September 18 have the same chart?

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