If you were born on March 31, your zodiac sign is Aries. The Sun occupies approximately 12° Aries on this date, placing you in the 2nd decan ruled by Sun. Swiss Ephemeris calculations confirm this position based on the Sun's annual path through the ecliptic.

People born on March 31 are Aries natives with Fire element energy and Cardinal modality. The 2nd decan sub-ruled by Sun adds a distinctive layer to the core Aries personality, making these individuals unique among their sign.

March 31 Aries natives are most compatible with signs that share the Fire 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 March 31 is Aquamarine. The decan-specific healing crystal is Sunstone, which resonates with the Sun-influenced energy of the 2nd decan of Aries.

March 31 falls in the 2nd decan of Aries (approximately 12° Aries). This decan is sub-ruled by Sun, which adds complementary energy to the core Aries traits.

While our celebrity database is still growing, all people born on March 31 share the Aries Sun sign at approximately 12° with Sun decan influence.

The numerology root for March 31 is 4. Lucky numbers include 4, 13, 22, 31. The lucky day is Tuesday (ruled by Mars), and the lucky color is Orange.

March 31 belongs to the Fire element through Aries. Fire signs are known for intuition, emotional depth, and empathy.