13 sign astrology chart with Ophiuchus. True sky astrology based on real astronomical constellations. Generate your free 13 sign natal chart including Ophiuchus the 13th zodiac sign. Unlike traditional astrology, StarChart 13 matches the actual sky verified with astronomy apps like Sky Map and Stellarium.
See Your Chart the Way the Sky Actually Looks
Generate your chart → then verify it yourself using a sky app in under 60 seconds
💥 Don't believe it. Check it. See exactly where your planets appear in the actual sky.
Takes 30 seconds to verify. No theory. Just look.
Birth Information
LOCATION TIP
Type your birth city like: North Kansas City, MO (or Kansas City, Missouri) and then tap the correct match from the dropdown.
(Month / Day / Year — easier to change years)
If city search or timezone fails, tap this to use your phone's timezone
Different astrology systems measure the zodiac differently. Most popular apps use a system that hasn't aligned with the actual sky in over 2,000 years.
StarChart 13 simply shows you where the planets actually appeared in the sky on the day you were born — based on real astronomy.
No theory. No argument. Just look for yourself.
✦ Don't Believe Us? Check It Yourself ✦
Open Sky Map or Stellarium, use the time travel feature, and set your exact birth date, time and location. The planets will be sitting in the exact same constellations as your chart. Every. Single. Time. No theory — just look.
Don't Take This At Face Value — Check It Yourself 👀
Generate your chart, then open Sky Map, set your birth location and date — and watch the planets sit in the exact same constellations. No theory. Just look.
Unauthorized reproduction, redistribution, or cloning of this software is prohibited.
✦ Dedication ✦
StarChart 13 exists because of the curiosity and work of others who questioned the traditional zodiac and looked to the real sky for answers.
With gratitude to Kim (RaStar Astrology) for her knowledge and influence on constellation-based astrology, and to Eric, whose Prometheus Capricorn wheel inspired the visual foundation for this project.
Their ideas helped light the path that led to this experiment with a 13-constellation sky chart.