♊︎ Sun at ~0° Gemini · first decan · Jupiter

May 21 zodiac sign: Taurus or Gemini?

If you were born on May 21, you're Taurus or Gemini depending on the time: Taurus before the Sun enters Gemini, Gemini after. The Sun crosses from one sign to the other on this date in 29 of the 51 years from 1980 to 2030, and the minute shifts from year to year (2026: May 21, 00:37 UTC). At noon UTC it's Gemini in 92% of years; the exact minute of the change for every year is below.

Taurus or Gemini? Check your year

The Sun's entry into Gemini 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 Taurus; after it, Gemini. Years missing from the list had the crossing on a neighbouring day (the Sun was in one sign for the whole of May 21).

1981 03:39 UTC1982 09:22 UTC1983 15:06 UTC1985 02:42 UTC1986 08:28 UTC1987 14:09 UTC1989 01:53 UTC1990 07:37 UTC1991 13:20 UTC1993 01:01 UTC1994 06:49 UTC1995 12:34 UTC1997 00:18 UTC1998 06:05 UTC1999 11:52 UTC2002 05:29 UTC2003 11:12 UTC2006 04:31 UTC2007 10:11 UTC2010 03:34 UTC2011 09:21 UTC2014 02:59 UTC2015 08:44 UTC2018 02:14 UTC2019 07:58 UTC2022 01:22 UTC2023 07:08 UTC2026 00:37 UTC2027 06:18 UTC

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

Your sign: Gemini (or Taurus)

The mutable air sign that lives by language — quick to learn, quick to pivot, quick to bore.

A Gemini Sun makes a mind that genuinely runs faster than most. You learn quickly, talk quickly, and link ideas across domains in a way that surprises specialists. Your gift is the connection — between two unrelated fields, between two people who'd never meet without you, between an old idea and a new use for it. You're a natural translator.

The date fixes the Sun; the hour fixes the rest. A Gemini born May 21 in the small hours has Aries rising, and a different first impression from one born at dawn. Your rising sign needs the birth time; the twelve Gemini Sun combinations show what each one changes.

Gemini dates, traits & compatibility → · What a Gemini birth chart looks like → · Taurus dates and traits →

In the US (2000–2014), an average of 11,472 babies were born on each May 21, rank 143 of 366 dates; Gemini is number 4 of 12 signs (8.56%). What's the most common zodiac sign?

The Moon on May 21, 1980–2030

Across the 51 years from 1980 to 2030, the Moon at noon UTC on May 21 was most often in Leo and Virgo (6 years each) and least often in Cancer (2 years). Unlike the Sun, the Moon sign depends on the birth year. On May 21, 2026, the Moon moves from Cancer into Leo at 02:48 UTC.

In 21 of those 51 years (41%) the Moon changed sign during May 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 May 21 in 2016, and new in 1993.

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.

May 2026: full moon May 1, 2026, Scorpio / May 31, 2026, Sagittarius · new moon May 16, 2026, Taurus.

Your decan: the first decan of Gemini

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 Gemini belong to Jupiter: where you grow, where you find meaning, and where life tends to be generous to you. Read it as Gemini with a Jupiter accent — the air core is unchanged, the emphasis moves.

Decan tarot card · Golden Dawn attribution

Eight of Swords

Restriction · Self-imposed limits · Anxiety. 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 Eight of Swords in full on My Day Check →

All the tarot cards for May 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 Geminis born on May 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 May 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: Gemini Sun with each Moon → · just my Moon sign · how the free birth chart calculator works

Classic matches for a May 21 birthday

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

Common questions

Is May 21 Taurus or Gemini?

Both are possible. On May 21 the Sun moves from Taurus into Gemini in most years, at a time that ranges from 00:18 UTC to 15:06 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 Taurus, after it Gemini.

What zodiac sign is May 21?

May 21 is a cusp day between Taurus and Gemini; at noon UTC it falls in Gemini in 92% of years between 1980 and 2030. Your birth year and hour decide it.

What decan is May 21?

The first decan of Gemini (0°–10°), sub-ruled by Jupiter. Decans divide each sign into three 10° slices; the sub-ruler adds a second flavour to the sign's core — here where you grow, where you find meaning, and where life tends to be generous to you.

What tarot card is May 21?

In the Golden Dawn system each decan has a minor arcana card: for the first decan of Gemini it is the Eight of Swords (restriction, self-imposed limits, anxiety). 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 May 21?

It depends on the year, and in 41% of years on the hour too. For example: in 1980, Leo or Virgo; in 1990, Aries; in 2000, Sagittarius or Capricorn; in 2010, Virgo; in 2020, Taurus. Over 1980–2030 the Moon on May 21 was most often in Leo and Virgo. A birth time and place pin it down.

Does everyone born on May 21 have the same chart?

No. They share the Sun in Gemini or Taurus, 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 May 21 in different years can have almost nothing else in common in their charts.