A study of the changing sky

BaZi · Nature of Time

A map of the ever-changing relationship between Heaven, Earth and Time.

Explore the energetic configuration of a birth, a chosen date and time, or the present moment in a selected place.
Enter a city and country. The calculator will look up its coordinates and time zone. For Current Moment, this is the place whose local sky you want to explore.
Clock time uses the local civil time recorded at birth. True solar time adjusts for longitude and the equation of time.

Four Pillars

This chart is a calendrical calculation, not an interpretation. Solar-term boundaries, historical time-zone rules and the selected time convention can affect results near a boundary. Please verify important charts against a second trusted calculator.

Birth details are used only in this browser session and are not saved by this page. Location lookup is provided by Open-Meteo Geocoding; Four Pillars calculations use the open-source lunar-javascript library.