October 21 falls on the Libra-Scorpio cusp. The Sun typically moves from Libra into Scorpio around this date each year, so your exact sign depends on the year and time of birth. Swiss Ephemeris calculations show the Sun enters Scorpio at varying times. Based on the standard date, your Sun sign is Весы, but you'll likely feel both signs' influence.

People born on October 21 are Весы natives with Air element energy and Cardinal modality. The 3rd decan sub-ruled by Mercury adds a distinctive layer to the core Весы personality, making these individuals unique among their sign.

October 21 Весы natives are most compatible with signs that share the Air element (trine aspect) or complementary elements. Check the compatibility section above for specific sign matches and the best romantic dates.

The traditional birthstone for people born on October 21 is Opal. The decan-specific healing crystal is Tourmaline, which resonates with the Mercury-influenced energy of the 3rd decan of Весы.

October 21 falls in the 3rd decan of Весы (approximately 29° Весы). This decan is sub-ruled by Mercury, which adds complementary energy to the core Весы traits.

Famous people born on October 21 include Kim Kardashian. All share the Весы Sun sign, though their individual charts create unique expressions of this energy.

The numerology root for October 21 is 3. Lucky numbers include 3, 12, 21, 30. The lucky day is Friday (ruled by Venus), and the lucky color is Silver.

October 21 belongs to the Air element through Весы. Air signs are known for intuition, emotional depth, and empathy.