What is the birth star for September?

September's birth stars include Fomalhaut, Alpheratz, Schedar, and Markab. Every day of September has its own star in our calendar.

Is Fomalhaut the birth star for September?

Fomalhaut is one of September's signature stars — it's the birth star for September 1. But birth stars change day by day, so the star depends on the exact date.

What is the Great Square?

A large asterism of three stars of Pegasus plus Alpheratz in Andromeda. Many September birth stars lie in this part of the sky.

Why does the birth star change every day?

As Earth orbits the Sun, the star that crosses the meridian at midnight shifts a little westward each night.

How do you choose the birth stars?

Our editors independently select, from the IAU-named stars, the one culminating around midnight on each date. It is not an official standard.

September Birth Stars

Independently compiled

September nights belong to the Great Square of autumn. All 30 days have their own star; the standouts are Fomalhaut, Alpheratz, Schedar, and Markab. Fomalhaut, the "solitary star of autumn," is the birth star for September 1.

Our birth stars are an independently compiled system: from the stars named by the International Astronomical Union, our editors chose the one that culminates around midnight on each date. Other sources may assign different stars, but this page follows our own mapping throughout.

Find your date's star — and enjoy it alongside the harvest moon.

What is the birth star of September?

September's birth stars include Fomalhaut, Alpheratz, Schedar, and Markab. In our calendar, each of the 30 days of September has its own star.

September birth stars (30 days)

All 30 days of September, with birth stars, star words, constellations, and magnitudes. Star words are examples. Culmination times and more detail are on each day's page.

Date	Birth star	Star words (example)	Constellation
9/1	Fomalhaut	solitude, refreshment	Piscis Austrinusα PsA
9/2	Skat	stride, current	Aquariusδ Aqr
9/3	Scheat	freedom, whimsy	Pegasusβ Peg
9/4	Markab	saddle, steadiness	Pegasusα Peg
9/5	Fumalsamakah	fish's mouth, voiced source	Piscesβ Psc
9/6	Markab	saddle, steadiness	Pegasusα Peg
9/7	Alkarab	well bucket, drawing up	Pegasusυ Peg
9/8	Fumalsamakah	fish's mouth, voiced source	Piscesβ Psc
9/9	Alkarab	well bucket, drawing up	Pegasusυ Peg
9/10	Errai	shepherd, wayfinding	Cepheusγ Cep
9/11	Scheat	freedom, whimsy	Pegasusβ Peg
9/12	Errai	shepherd, wayfinding	Cepheusγ Cep
9/13	Alpheratz	heritage, linkage	Andromedaα And
9/14	Caph	beckoning, welcome	Cassiopeiaβ Cas
9/15	Alpheratz	heritage, linkage	Andromedaα And
9/16	Caph	beckoning, welcome	Cassiopeiaβ Cas
9/17	Algenib	pulse, heartbeat	Pegasusγ Peg
9/18	Ankaa	rebirth, immortality	Phoenixα Phe
9/19	Algenib	pulse, heartbeat	Pegasusγ Peg
9/20	Ankaa	rebirth, immortality	Phoenixα Phe
9/21	Fulu	side road, accompanying path	Cassiopeiaζ Cas
9/22	Schedar	dignity, poise	Cassiopeiaα Cas
9/23	Fulu	side road, accompanying path	Cassiopeiaζ Cas
9/24	Schedar	dignity, poise	Cassiopeiaα Cas
9/25	Diphda	depth, immersion	Cetusβ Cet
9/26	Achird	neighborliness, closeness	Cassiopeiaη Cas
9/27	Diphda	depth, immersion	Cetusβ Cet
9/28	Achird	neighborliness, closeness	Cassiopeiaη Cas
9/29	Wurren	phoenix's kin, shared flame	Phoenixζ Phe
9/30	Mirach	deliverance, hope	Andromedaβ And

The September night sky

Fomalhaut (the 1st) is a lonely first-magnitude beacon in the Southern Fish, shining almost alone in the southern autumn sky — hence its Japanese nickname, the "solitary star of autumn." Alpheratz (the 13th and 15th) and Markab (the 4th and 6th) are corners of the Great Square.

The Great Square joins three stars of Pegasus with Alpheratz in Andromeda; Mirach (the 30th) lies along Andromeda's chain. Schedar (the 22nd and 24th) sits in Cassiopeia's W. The clear autumn air makes September ideal for a first try at constellation hunting.

How to enjoy September birth stars

Choose by star words: calm star words for the season of harvest — fitting for Respect for the Aged Day gifts.
Find it at culmination: Fomalhaut hangs low in the south — seek out a spot away from city lights.
Pair it with the birthday color: autumn colors and star words for a moon-viewing-season gift.
For gifts and cards: the story of the "solitary star of autumn" is made for September birthdays.

FAQ

What is the birth star for September?: September's birth stars include Fomalhaut, Alpheratz, Schedar, and Markab. Every day of September has its own star in our calendar.
Is Fomalhaut the birth star for September?: Fomalhaut is one of September's signature stars — it's the birth star for September 1. But birth stars change day by day, so the star depends on the exact date.
What is the Great Square?: A large asterism of three stars of Pegasus plus Alpheratz in Andromeda. Many September birth stars lie in this part of the sky.
Why does the birth star change every day?: As Earth orbits the Sun, the star that crosses the meridian at midnight shifts a little westward each night.
How do you choose the birth stars?: Our editors independently select, from the IAU-named stars, the one culminating around midnight on each date. It is not an official standard.

Our birth stars are an original editorial system compiled from IAU-named stars (rule: the star that culminates around local midnight on each date). Star words are examples; there is no official standard. Star name data: IAU Working Group on Star Names (CC BY 4.0).Editorial policy

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