Zodiac Sign Lookup.

The zodiac is one of humanity’s oldest personality frameworks

For over 3,000 years, cultures across the world have looked at the Sun’s path through the sky and seen a mirror of human nature reflected back. The Western zodiac divides the ecliptic — the Sun’s apparent yearly path — into twelve equal 30-degree segments, each named after the constellation that historically occupied that space.

Your zodiac sign, also called your Sun sign, is determined by which segment the Sun occupied at the moment of your birth. It represents your core identity, your conscious self, and the lens through which you engage with the world.

The 12 modern Western zodiac signs

Fire signs — Aries, Leo, Sagittarius

Fire signs are associated with initiative, passion, and creative energy. They tend to act first and think later, driven by instinct and enthusiasm.

Earth signs — Taurus, Virgo, Capricorn

Earth signs are grounded in practicality, stability, and material reality. They value security, hard work, and tangible results.

Air signs — Gemini, Libra, Aquarius

Air signs are connected to communication, intellect, and social systems. They thrive on ideas, relationships, and intellectual exchange.

Water signs — Cancer, Scorpio, Pisces

Water signs are attuned to emotion, intuition, and the inner world. They navigate life through feeling, empathy, and deep psychological awareness.

The three modalities

Each sign also belongs to one of three modalities, describing how energy is expressed:

• Cardinal (Aries, Cancer, Libra, Capricorn): Initiators who start new cycles
• Fixed (Taurus, Leo, Scorpio, Aquarius): Sustainers who stabilise and consolidate
• Mutable (Gemini, Virgo, Sagittarius, Pisces): Adapters who transition and transform

Historical context — the zodiac’s deep roots

Babylonian origins (circa 1894 BC)

The zodiac originated in ancient Babylon, where astronomers divided the sky into 12 equal segments to align with their 12-month calendar. They were aware of 13 constellations along the ecliptic, including Ophiuchus, but chose 12 for calendar symmetry.

Greek refinement (circa 130 BC)

Hipparchus refined the zodiac system and aligned it with the seasons through the tropical zodiac. Ptolemy later codified these divisions in his Tetrabiblos, establishing the framework still used in Western astrology today.

The tropical vs sidereal distinction

The tropical zodiac (used in most Western horoscopes) anchors signs to the seasons, so Aries always begins at the March equinox. The sidereal zodiac (used in Vedic astrology) aligns with the actual constellations, which have shifted approximately 23 degrees due to axial precession over the past two millennia.

The 13th sign — Ophiuchus

Ophiuchus (the Serpent-Bearer) is the constellation the Sun passes through between Scorpio and Sagittarius, roughly November 29 to December 17. While astronomers have long known about this constellation, it was excluded from the astrological zodiac by the ancient Babylonians to maintain the 12-sign system.

In 1970, astrologer Steven Schmidt proposed adding Ophiuchus as a 13th sign. The idea resurfaces periodically in popular media, often misattributed to NASA — which clarified it studies astronomy, not astrology. Most professional astrologers continue to use the traditional 12-sign system, noting that the zodiac was designed as a symbolic framework aligned with seasons, not a literal map of constellations.

The symbol of Ophiuchus is the caduceus — a staff with two snakes coiled around it — which remains the international symbol of medicine to this day.

What this tool does

This tool calculates your zodiac sign from any date using the standard tropical zodiac date ranges. It provides your sign, element, modality, ruling planet, and key personality themes. It is a reference tool, not a complete birth chart analysis, which would additionally require the positions of the Moon, planets, and other points at the exact time and location of birth.