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.
Birth Information
24-hour time (e.g. 14:30 = 2:30 PM) · don't have it exact? that's ok, use your best guess
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Enter birth info and tap Calculate
StarChart 13 · Natal Wheel
Ecliptic Sky View
Tap a planet on your chart above to highlight it here · drag to pan · pinch or scroll to zoom
Generate your chart above, then tap any planet to sync it here.
Tropical vs. True Sky Comparison
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TROPICAL
TRUE SKY
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Astronomy proof requests are included with your StarChart13 membership — no separate payment is collected here.
Your name, email address, birth date, exact birth time, and birth location are used only to prepare and deliver your astronomy proof. Privacy details.
