Open EphemerisMake me an interactive natal chart for July 20, 1969 at 8:17 PM in Houston, Texas.Open EphemerisShow me the Human Design bodygraph for someone born January 15, 1990 at 10:00 AM in London.Open EphemerisWhat's the moon phase right now, and when is the next full moon?

Open Ephemeris gives ChatGPT real astronomy to work from. Every position comes from the NASA JPL DE440 ephemeris covering 1550-2650 CE at sub-arcsecond precision, the same kernel used for spacecraft navigation, so positions are computed rather than estimated. Ask for a natal chart and an interactive wheel opens in the conversation. Click a planet, a house, or an aspect line and the interpretation loads in place. Switch house systems without asking again. The same applies to Human Design bodygraphs, synastry bi-wheels, transit timelines, Vedic Rashi grids and BaZi Four Pillars charts. Beyond charts: transits and progressions, solar and lunar returns, eclipse timing and local visibility, astrocartography, electional search for timing windows, and fixed-star positions. Free to start, no card required.

Application

Open Ephemeris