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Johann Bayer's 1603 Uranometria plate of Leo: a striding lion engraved on a deep blue sky, the stars heightened in gold

Zodiac myths · Leo

Leo is the lion whose skin no weapon could cut

Arrows bounced off it. Swords bent. Heracles had to do it with his bare hands, and then he wore it for the rest of his life.

Johann Bayer, Uranometria, 1603

At a glance

In Greek myth Leo is the Nemean lion, a beast with an invulnerable hide. Heracles strangled it as his first labour and wore its skin; Zeus set the lion in the sky.

The figure
The Nemean lionApollodorus, Library 2.5.1
Sign dates 2026
Jul 22 to Aug 23, 2026Sun enters Jul 22, 2026, 19:13 UTC
Sun in the stars, 2026
Aug 11 to Sep 16, 202637 days inside the IAU Leo
Best seen at midnight
Feb 7 to Mar 14, 2027best night about Feb 24, 2027

Leo as a sign

The myth

The first labour

No blade could cut the lion. Heracles ended up wearing it as armour.Urania's Mirror, London 1824 · Library of Congress

Try this today

  • Name one thing that used to scare you that you now wear like armour.
  • On a spring evening, trace the Sickle and end at Regulus.
  • Find something proud in your week and let it be seen, without the club.

Near the town of Nemea, in the hills of the northern Peloponnese, a lion was killing people and herds. It was no ordinary animal. Hesiod's Theogony says Hera raised it and set it loose there, and Apollodorus adds the detail that matters: its hide could not be wounded by any weapon.

King Eurystheus made it the first of Heracles' labours. Heracles tried arrows first, Apollodorus says, and they did nothing. So he followed the lion into its cave, a den with two mouths, blocked one entrance, went in through the other, and wrestled the lion until he choked it.

Then he had a new problem: how do you skin an animal no blade can cut? Later tellings say he used the lion's own claws. He wore the hide as armour, with the lion's head as a helmet, and that is how Greek artists drew him ever after: a man in a lion skin, carrying a club.

Hyginus says Zeus placed the lion among the stars, and some writers explained the honour simply: it is the king of beasts. The constellation still looks the part, a crouching shape with a bright star at its chest.

Other tellings

The lion's lost tail, and the little king

The lion's tail became a queen's lock of hair, renamed by an astronomer.Alexander Jamieson, A Celestial Atlas, 1822 · US Naval Observatory Library

Leo's brightest star is Regulus, Latin for "little king," a name that goes back to Copernicus's era and to the older Greek Basiliskos. It sits almost exactly on the ecliptic, so the Moon and planets pass close by it.

The tuft of the lion's tail had its own story. The faint star cluster behind Leo was once counted as part of it, until the astronomer Conon of Samos, around 245 BC, named it the Lock of Berenice, after the Egyptian queen who cut off her hair as an offering for her husband's safe return from war. Callimachus wrote a poem about it, and Catullus translated it into Latin (poem 66). Today it is its own constellation, Coma Berenices.

In the sky

Finding Leo: Feb 7 to Mar 14, 2027

Jul 22 for the sign, 20 days later for the stars.Urania's Mirror, London 1824 · Library of Congress

Look for the Sickle, a backward question mark of stars that forms the lion's head and mane, with Regulus as its full stop. Leo is one of the few zodiac figures that actually looks like its animal.

2026: sign Jul 22, 2026, 19:13 UTC to Aug 23, 2026, 02:19 UTC. Sun in the stars: Aug 11 to Sep 16, 2026 (37 days). (Why the 20-day gap.) Leo peaks at midnight near Feb 24, 2027.

Pick your telling

The lion's tail became a queen's lock of hair, renamed by an astronomer.

3 versions of the Nemean lion.

Leo, 3 ways

The Nemean lion

Heracles corners the invulnerable lion in its two-mouthed cave, strangles it, and wears its hide. Zeus sets the lion in the sky.

Source: Apollodorus, Library 2.5.1; Hyginus, Astronomica 2.24

See it yourself. Leo: Feb 7 to Mar 14, 2027.

More to read

One shorter read. It opens in place.

In astrology

Why the lion belongs to the Sun

In traditional astrology the Sun rules Leo, the only sign it governs, and in antiquity the Sun passed through the lion's stars at the height of summer. Astrologers read Leo as warmth, pride and presence. The myth adds the edge: the lion is magnificent and dangerous, and the hero who beats it takes on its look. Ask what you have earned the right to wear, and look at your Leo placements.

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Leo by the numbers

DatesDays
SignJul 22 to Aug 23, 202631
Sun in the starsAug 11 to Sep 16, 202637
Midnight seasonFeb 7 to Mar 14, 202736
Leo in 2026

All times are UTC. In the Americas the local date can be a day earlier; in Asia and Australia a day later.

Quick answers

What is the Greek myth of Leo?

Leo is the Nemean lion, a monster whose hide no weapon could pierce. Heracles strangled it in his first labour and wore its skin, and Zeus placed the lion in the stars.

Who is the Greek god of Leo?

Leo's myth belongs to Heracles, a hero rather than a god. Astrologically, Leo is ruled by the Sun, which the Greeks associated with Helios and later Apollo.

How did Heracles kill the Nemean lion?

With his hands. Arrows and blades could not wound it, so he trapped it in its cave and choked it, according to Apollodorus.

What is the brightest star in Leo?

Regulus, the "little king," at the lion's heart. It lies very close to the ecliptic, so the Moon often passes near it.

Who sent the Nemean lion?

Hesiod says Hera reared it and set it on Nemea. Other sources make it the offspring of Typhon or of the monster Echidna.