ZODIA › Sagittarius › Decan 3

Sagittarius decan 3 · Dec 12 to 21

The Leo Decan

Born between December 12 and 21? In most years, that puts your Sun between 20° and 29° Sagittarius, the third decan. You keep all of Sagittarius’ big heart, with Leo mixed in, so you're the one who plans the night out and makes sure nobody's left standing by the wall.

  • 20° to 29° Sagittarius
  • The Sun
  • Taylor Swift, Dec 13
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Born near a cutoff?

Check your decan

The dates move by about a day depending on the year you were born. Enter your birthday and we’ll work out where the Sun was.

What gives you away

Three signs you’re the Leo decan

01You're the one who throws the party

You're the one who turns “we should do something” into a plan, with a group chat, a playlist and a spot booked. On the nights you host, the shy friend ends up dancing and nobody pays for their own first drink.

The astrologyThe Sun rules Leo, and astrologers link it with warmth and being at the center of things. Add Sagittarius’ love of a good time and you end up as the host.

02You tell stories better than anyone

A trip to the grocery store becomes a five-minute bit with voices. You add a little to how it happened, and everyone lets it slide. People ask you to tell the one about last summer again, even though they were there.

The astrologyLeo is the sign of performance, and astrologers call Sagittarius the zodiac's storyteller. This decan gets both, so people tend to stop and listen when you talk.

03You aim high in public

When you're excited about a plan, like starting a band, moving somewhere new or writing the book, everyone hears about it. You'd take aiming high and missing over settling for small. When people doubt you, it mostly makes you want it more.

The astrologyJupiter makes Sagittarius think big, and the Sun gives Leo the nerve to go after it in public. This decan carries both.

Why you’re like this

How Sagittarius’ decans work

Each zodiac sign covers 30 degrees of the sky. Astrologers split every sign into three 10-degree slices called decans, and the Sun spends about ten days in each one.

Sagittarius is a fire sign. In the decan system most popular in modern astrology, each third of a sign mixes in a sign of the same element, in order. The last third mixes in Leo, which completes the fire trio. Leo is ruled by the Sun, the planet astrologers tie to confidence, creativity and being seen.

Love

The Leo decan in love

You love loudly. You tell your friends every good thing about the person you're seeing. You want romance with some sparkle in it, like flowers at your door for no reason or a slow dance in the kitchen.

You need someone who's proud to be seen with you and laughs at your jokes, even the ones you've told before. Being ignored stings more than almost anything, so a partner who remembers the small stuff you mentioned once wins you over fast.

If you love one

Show up for their big moments, front row if you can. The Leo decan notices who came.

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Work

At work

You do your best when there's a room to win over. Too long behind the scenes wears you down. Astrologers often match this decan with performing, teaching, content creation, events, marketing and anything that puts you in front of people.

The hard part

When it gets heavy

You can make things about yourself without meaning to. A friend's news turns into your own story, a small bit of criticism feels like the whole world turned on you, or you sulk for an hour when the group chat leaves your news on read.

Next time someone shares big news, ask two follow-up questions before you share yours. You'll still get your turn.

Famous faces

Born in this decan

  • Taylor SwiftDec 13, 1989
  • Billie EilishDec 18, 2001
  • Brad PittDec 18, 1963
  • Vanessa HudgensDec 14, 1988
  • Jane AustenDec 16, 1775
  • Christina AguileraDec 18, 1980

We checked each birthday against the Swiss Ephemeris, the planet-position tables astrologers use, so everyone listed sits inside this decan whatever time they were born. Sharing a decan is a fun overlap. Your Moon, rising and the rest of your chart are still all your own.

Your questions

Frequently asked questions

What dates are Sagittarius decan 3?

In most years, December 12 to 21. The Sun reaches 20° Sagittarius on December 11, 12 or 13 depending on the year and time zone, and leaves Sagittarius for Capricorn on December 20, 21, 22 or 23 (we checked every year from 1940 to 2026 with the Swiss Ephemeris). Born on one of those days? Use the decan checker on this page, or your free birth chart.

I was born on December 20, 21, 22 or 23. Am I a Sagittarius or a Capricorn?

It depends on the year, and sometimes on the hour. The Sun moves into Capricorn on December 20, 21, 22 or 23, depending on the year and where you were born. Put your birthday into the decan checker above. If it says your birth time decides, your free birth chart gives you the exact answer.

Why does the Leo decan feel like the most dramatic Sagittarius?

Because Leo, the sign mixed in here, is ruled by the Sun and loves an audience. Sagittarius already tells big stories, and this decan adds a spotlight and a soundtrack.

Do decans work for my rising sign or Moon too?

Yes. Any planet or point in Sagittarius has a decan, set by its degree. A Sagittarius rising at 15°, for example, is in the Aries decan, even if your Sun is in another sign. Your rising degree needs your exact birth time, and your free birth chart shows it.

Which decan system does ZODIA use?

The triplicity system, the most popular one in modern astrology. Each decan mixes in a sign of the same element, so Sagittarius goes Sagittarius, Aries, Leo. Older Hellenistic astrology used a different set called the Chaldean faces, which gives Sagittarius’ thirds to Mercury, the Moon and Saturn. Both are real traditions.

Is my decan my whole personality?

No. Your decan sharpens your Sun sign, and your Sun is one part of your chart. Your Moon shapes how you feel, your rising shapes how you come across, and your Venus and Mars shape how you love and go after things. Two people born on the same day can still be very different.

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Sources & Further Reading

Each sign divides into three decans of ten degrees. This page uses the triplicity decans, where each decan takes a sign of the same element (for Sagittarius, Sagittarius, Aries and Leo). Hellenistic astrology also used the Chaldean faces, which give Sagittarius’ decans to Mercury, the Moon and Saturn. Decan dates and every Sun degree on this page were checked with the Swiss Ephemeris. Last reviewed November 3, 2026.

Related: the 12 houses · astrology glossary · methodology. Editorial boundaries: ZODIA does not provide financial, medical, or legal advice.