♏︎ Sun at ~8° Scorpio · first decan · Mars

October 31 zodiac sign: Scorpio, first decan

If you were born on October 31, your sign is Scorpio, the water sign ruled by Pluto: the Sun is in Scorpio on this date in every year from 1980 to 2030. The Sun sits about 8° into Scorpio on this date, in the first decan, where Scorpio's core takes on a Mars flavour. Here's what the date fixes, and what only your birth time can tell you.

Your sign: Scorpio

The fixed water sign that goes to the depths and refuses to keep things shallow.

A Scorpio Sun is built around intensity and depth. You see through people — not always charitably, but accurately. The polite veneer most adults walk around in is transparent to you; you watch what people do, not what they say, and you remember. This makes you formidable in any field that rewards the willingness to look at uncomfortable things directly: therapy, investigation, surgery, research, art that doesn't flinch.

The date fixes the Sun; the year and hour fix the rest. A Scorpio born October 31 with the Moon in Virgo runs on a different inner weather from one with the Moon in Scorpio: see Scorpio Sun, Virgo Moon. Your rising sign needs the birth time; the twelve Scorpio Sun combinations show what each one changes.

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

In the US (2000–2014), an average of 10,263 babies were born on each October 31, rank 356 of 366 dates; Scorpio is number 7 of 12 signs (8.19%). What's the most common zodiac sign?

The Moon on October 31, 1980–2030

Across the 51 years from 1980 to 2030, the Moon at noon UTC on October 31 was most often in Leo (6 years) and least often in Taurus, Gemini, Libra, and Scorpio (3 years each). Unlike the Sun, the Moon sign depends on the birth year. On October 31, 2026, the Moon stays in Cancer the whole UTC day.

In 19 of those 51 years (37%) the Moon changed sign during October 31 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 October 31 in 2020, and new in 1997.

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.

October 2026: full moon October 26, 2026, Taurus · new moon October 10, 2026, Libra.

Your decan: the first decan of Scorpio

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 Scorpio belong to Mars: your drive — how you take action, what makes you angry, and what you fight for. Read it as Scorpio with a Mars accent — the water core is unchanged, the emphasis moves.

Decan tarot card · Golden Dawn attribution

Five of Cups

Loss · Regret · What remains. 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 Five of Cups in full on My Day Check →

All the tarot cards for October 31: 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 Scorpios born on October 31 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 October 31? 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: Scorpio Sun with each Moon → · just my Moon sign · how the free birth chart calculator works

Classic matches for an October 31 birthday

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

Common questions

What zodiac sign is October 31?

October 31 is Scorpio, the fixed water sign ruled by Pluto. The Sun sits at roughly 8° Scorpio on this date, in the first decan.

What decan is October 31?

The first decan of Scorpio (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 October 31?

In the Golden Dawn system each decan has a minor arcana card: for the first decan of Scorpio it is the Five of Cups (loss, regret, what remains). 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 October 31?

It depends on the year, and in 37% of years on the hour too. For example: in 1980, Leo; in 1990, Pisces or Aries; in 2000, Sagittarius or Capricorn; in 2010, Leo; in 2020, Taurus. Over 1980–2030 the Moon on October 31 was most often in Leo. A birth time and place pin it down.

Does everyone born on October 31 have the same chart?

No. They share the Sun in Scorpio, 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 October 31 in different years can have almost nothing else in common in their charts.