♍︎ ♎︎ Zodiac signs by birthday

September zodiac signs

September birthdays fall in Virgo or Libra. Pick a day for its sign, the Sun’s exact degree and decan, and a short profile.

Virgo and Libra

September belongs mostly to Virgo, the mutable earth sign ruled by Mercury, and closes with the first stretch of Libra, the cardinal air sign ruled by Venus. The changeover falls around the 22nd or 23rd, and on those dates the sign depends on the birth year and time, which the cusp table on each day page answers.

The first three weeks carry Virgo through its middle and late degrees: practical, observant, quietly exacting, first with a Saturn sub-ruler and then with Venus softening the edges. The last week opens Libra at its rawest, with Venus ruling both the sign and the decan, so the mood turns from fixing things to weighing them, and from the workbench to the conversation across the table.

September birthdays, day by day
DateSun signSun’s degreeDecan
Virgo
7°–11° Virgo
1st · Mercury
Virgo
8°–12° Virgo
1st · Mercury
Virgo
9°–13° Virgo
2nd · Saturn
Virgo
10°–14° Virgo
2nd · Saturn
Virgo
11°–15° Virgo
2nd · Saturn
Virgo
12°–15° Virgo
2nd · Saturn
Virgo
13°–16° Virgo
2nd · Saturn
Virgo
14°–17° Virgo
2nd · Saturn
Virgo
15°–18° Virgo
2nd · Saturn
Virgo
16°–19° Virgo
2nd · Saturn
Virgo
17°–20° Virgo
2nd · Saturn
Virgo
18°–21° Virgo
2nd · Saturn
Virgo
19°–22° Virgo
3rd · Venus
Virgo
20°–23° Virgo
3rd · Venus
Virgo
21°–24° Virgo
3rd · Venus
Virgo
22°–25° Virgo
3rd · Venus
Virgo
23°–26° Virgo
3rd · Venus
Virgo
24°–27° Virgo
3rd · Venus
Virgo
25°–28° Virgo
3rd · Venus
Virgo
26°–29° Virgo
3rd · Venus
Virgo near cusp
27°–30° Virgo
3rd · Venus
Virgo or Libra cusp
28°–30° Virgo
3rd · Venus
Virgo or Libra cusp
0°–2° Libra
1st · Venus
Virgo or Libra cusp
0°–3° Libra
1st · Venus
Libra
0°–4° Libra
1st · Venus
Libra
1°–5° Libra
1st · Venus
Libra
2°–6° Libra
1st · Venus
Libra
3°–7° Libra
1st · Venus
Libra
4°–8° Libra
1st · Venus
Libra
5°–9° Libra
1st · Venus

Decans here follow the triplicity system: each sign’s first ten degrees belong to the sign itself, the next ten to the next sign of the same element, the last ten to the third. Each decan’s sub-ruler is that sign’s ruling planet. Calculated by Lunonis from the same ephemeris code as our charts (astronomy-engine, checked against Swiss Ephemeris): geocentric, tropical zodiac, true equinox of date. Times are UTC: add or subtract your time zone’s offset, which can move the change to the day before or after.

Your own chart

Beyond the birthday

Your birthday gives the Sun. Add the year, the time and the city to see your Moon, your Rising sign and every planet, free.

The other months