Western astrology divides the Sun's apparent yearly path (the zodiac) into 12 equal 30-degree segments, the zodiac signs. A person's "Sun sign" is determined by the Sun's position at birth, corresponding to their solar birth date.
The 12 signs and their elements: Aries (Mar 21–Apr 19, Fire), Taurus (Apr 20–May 20, Earth), Gemini (May 21–Jun 20, Air), Cancer (Jun 21–Jul 22, Water), Leo (Jul 23–Aug 22, Fire), Virgo (Aug 23–Sep 22, Earth), Libra (Sep 23–Oct 22, Air), Scorpio (Oct 23–Nov 21, Water), Sagittarius (Nov 22–Dec 21, Fire), Capricorn (Dec 22–Jan 19, Earth), Aquarius (Jan 20–Feb 18, Air), Pisces (Feb 19–Mar 20, Water). Note that boundary dates can shift by a day depending on the year, so a precise tool should calculate from the exact date/time rather than a fixed table.
The four elemental groups: Fire signs (Aries, Leo, Sagittarius) are energetic and like to lead; Earth signs (Taurus, Virgo, Capricorn) are practical and value stability; Air signs (Gemini, Libra, Aquarius) are communicative and flexible; Water signs (Cancer, Scorpio, Pisces) are emotional, intuitive, and deep.
A full birth chart also includes the Moon, other planets, and the Ascendant at the exact time and place of birth, the Sun sign is only one slice of the full picture.
