September 21 Zodiac Sign

People born on September 21 are Virgo.

In 30 of the 201 years from 1900 to 2100, the Sun moved from Virgo into Libra during September 21 somewhere in the world, so a September 21 birthday in one of those years can be Libra.

September 21 falls late in Virgo season, which usually runs from August 23 to September 22.

Your birth time and place settle it: your free birth chart shows exactly which sign the Sun was in when you were born.

What Virgo is like

Symbol: The Maiden
Element: Earth
Modality: Mutable
Ruler: Mercury
Usual dates: August 23 to September 22

Virgo notices. A mutable earth sign ruled by Mercury, Virgo sees the detail everyone else walked past: the thing that's slightly off, the step that would make this work properly, the small fix that quietly saves the day.