Z13 Astrology

Showing you the cosmic breadcrumbs that are lighting up your life path.

Classical (Tropical) and True-Sky (Sidereal) Zodiac, together in one place - powered by real NASA JPL data.

Why Two Zodiacs?

Tropical Zodiac

The Tropical zodiac is the one you are probably most familiar with, based on Earth's seasons and psychological archetypes. It’s symbolic, reflective, and deeply rooted in Western astrology traditions. Most horoscopes you see online use this system.

Z13 True-Sky Zodiac

The Z13 True-Sky zodiac follows the actual constellations in space - with their real sizes, boundaries, and positions. It’s the astrology of what you see in the sky, and has a 'soul deep' connection to the stars. 🌟

Both systems have value. You get to explore them together by clicking the toggle at the top of the page. ☝️

Start Your Cosmic Journey

Astronomically Informed • Spiritually Curious

© 2025 Z13 Astrology. Built with stars, math, and a little magic.