October 21 Zodiac Sign: Libra
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- Date
- October 21
- Sun sign
- Libra
- Usual range
- September 23 to October 22
- Place in sign
- late, decan 3
- Sub-ruler
- Mercury
- Element
- Air
- Modality
- Cardinal
- Ruling planet
- Venus
- Changeover
- No
- Constellation
- Virgo
Libra holds the Sun at noon UTC on October 21. That is true in every year of the 41 years from 1992 to 2032.
Libra dates are September 23 to October 22. October 21 falls in the late part of Libra. It is an air sign, cardinal, ruled by Venus. Fair-minded, social, always weighing both sides.
October 21 sits within two days of a sign change on October 22 and October 23. If the birth was late on this date, check the year in the calculator rather than the printed range.
In 2024 at noon UTC, the Sun on October 21 is in the third decan of Libra, the late 10 degrees of the sign. The triplicity sub-ruler of that slice is Mercury.
The constellation behind the Sun on October 21 is Virgo. That is the true place of the Sun in the stars, and it is a separate fact from the astrological sign.
Moon, Rising, Mercury, Venus, and Mars still need a birth time and place. This page only settles the Sun sign.
Sign page: Libra. Check this birthday in the zodiac calculator.
Questions
What zodiac sign is October 21?
October 21 is Libra. These pages read the Sun at noon UTC, which is the same tropical sign the zodiac calculator reports for a birth at 12:00 UTC. From 1992 to 2032 that noon figure stays in Libra. Use a birth time in the calculator if you were born near a nearby changeover.
Is October 21 a cusp birthday?
No. Noon UTC on October 21 stays in Libra for every year checked. A sign change still sits nearby, on October 22 and October 23, so a late birth on this date can be worth a calculator check. The first and last days of September 23 to October 22 are the usual edge.
What is the October 21 star sign?
People searching for the October 21 star sign usually mean the Sun sign. On this page that is Libra, an air sign, cardinal, ruled by Venus, in the late decan with Mercury as the triplicity sub-ruler. Libra dates are September 23 to October 22. The constellation behind the Sun is a separate fact.