Birthday signs · Gemini season
What zodiac sign is May 31?
Under the tropical zodiac, May 31 is set in Gemini. Each noon UTC on May 31 in the 101 years from 1930 through 2030 finds the Sun in Gemini, at 9.07° to 10.56° Gemini. Day 10 or 11 of Gemini season is May 31, located in the early part and associated with the element air.
Calculated across 1930–2030 · checked .
May 31 is Gemini
| Gemini at noon UTC | 101 of 101 years, 1930–2030 |
|---|---|
| Nearest change of sign | at least 9 days away |
| Birth time needed for the sign | no |
May 31 at a glance
| Sign | ♊︎ Gemini, the Twins |
|---|---|
| Element and mode | air, mutable |
| Polarity | positive (masculine) |
| Ruler | Mercury (traditional) |
| Sun on this date | 9.1° to 10.6° Gemini at noon UTC, 1930–2030 |
| Day of the season | day 10 or 11 of Gemini season |
| Decan | first (69 years) and second (32); faces: Jupiter, Mars |
| Sidereal sign (Lahiri) | Taurus |
| Day number | 4 (modern numerology) |
Rulers: Ptolemy; modern list.6
The decan: early Gemini
| Noon Sun | 9.07° to 10.56° Gemini |
|---|---|
| Decans | first in 69 years, second in 32 |
| Decan line crossed | 10° |
| Face rulers, Chaldean order | Jupiter, Mars |
Faces after Lilly, in Chaldean order.3
May 31 by the numbers
| Day number | 4 (3 + 1 = 4) |
|---|---|
| Month-day number | 9 (5 + 4) |
| System | modern numerology, digit sums |
Digit sums as numerology guides give them.4
Where the date falls in the season
| Day of Gemini season | 10 or 11 |
|---|---|
| Gemini season opened | May 21 (73 years) or May 22 (28) |
| Gemini season closed | June 20 (39 years) or June 21 (62) |
| Element and mode | air, mutable |
| Traditional ruler | Mercury |
Seasons by the noon-UTC rule; rulers after Ptolemy.2
Born at this point in Gemini season
Born on the thirty first, this person arrived at the seam between two parts of Gemini season, where the first decan hands over to the second. Early in the sign's run, the mind keeps two answers open at once. Ideas arrive quickly and attention shifts before the last one is finished, which can read as restlessness to anyone watching. Inside, it feels like standing in a doorway and checking which room to enter. Learning to change course without calling it failure is the steady task of this position.
Interpretation, not prediction.
The sidereal sign
| Sidereal sign, Lahiri ayanamsa | Taurus, all 101 years |
|---|---|
| Noon Sun, sidereal Taurus | 15.6°–16.9° |
| Convention | Indian (Vedic) astrology |
Ayanamsa convention.5
Born on May 31
- Walt Whitman (1819–1892), American poet, essayist and journalist
- Pope Pius XI (1857–1939), pope of the Catholic Church from 1922 to 1939
- Saint-John Perse (1887–1975), French poet and diplomat
- Clint Eastwood (1930), American actor and film director
- Svetlana Alexievich (1948), Belarusian investigative journalist and non-fiction prose writer
- Viktor Orbán (1963), Prime Minister of Hungary (1998–2002; 2010–2026)
- Colin Farrell (1976), Irish actor
- Marco Reus (1989), German association football player
Birth dates checked on Wikidata.7
May 31 in history
Observed on this date:
- Anniversary of Royal Brunei Malay Regiment (Brunei)
- Kaamatan, harvest festival in the state of Sabah and the federal territory of Labuan (Malaysia)
- World No Tobacco Day (International)
- Borobi Day (Australia)
Events on May 31:
- 1610: The pageant London's Love to Prince Henry on the River Thames celebrates the creation of Prince Henry as Prince of Wales.
- 1910: The South Africa Act comes into force, establishing the Union of South Africa.
- 1961: In Moscow City Court, the Rokotov–Faibishenko show trial begins, despite the Khrushchev Thaw to reverse Stalinist elements in Soviet society.
- 1997: The Confederation Bridge opens, linking Prince Edward Island with mainland New Brunswick.
- 2013: A record breaking 2.6 mile wide tornado strikes near El Reno, Oklahoma, United States, causing eight fatalities (including three storm chasers) and over 150 injuries.
How the answer was worked out
The tropical longitude of the Sun on May 31 was calculated at noon UTC for every year from 1930 through 2030 by Astronomy Engine, with each year's sign read from it.1 How the Machine works
Questions people also ask
What zodiac sign is May 31?
Among 101 sampled years from 1930 to 2030, May 31 is Gemini in every case, counting the Sun at noon UTC.
Is May 31 on a zodiac cusp?
No. Between 1930 and 2030, the noon Sun stood in Gemini on every May 31, and no May 31 lies within 9 days of a sign change.
What decan is May 31?
Two decans of Gemini contain May 31: the first, the face of Jupiter, holds 69 sampled years, and the second, the face of Mars, holds 32.
What is the birthday number for May 31?
Modern numerology gives May 31 a day number of 4 and a month-day number of 9, found by summing the digits.
Sources
- Astronomy Engine JavaScript reference — Don Cross, Astronomy Engine. Verified .
- Ptolemy, Tetrabiblos, Book I — LacusCurtius, University of Chicago. Verified .
- Decan (astrology): the faces of the planets (after Lilly) — Wikipedia. Verified .
- Life Path Number — Numerology.com (practitioner site). Verified .
- Ayanamsa (Lahiri and other sidereal conventions) — Wikipedia. Verified .
- Gemini (astrology) — Wikipedia. Verified .
- Wikipedia: May 31 — Wikipedia (Wikimedia On this day feed); birth dates checked on Wikidata. Verified .