Guides
A closer look at the methods, assumptions, and data behind Astrologram.
Unknown birth time: what can a chart show?
You can start with an unknown time, but the chart remains based on an assumption. Here is what Astrologram uses and how to read the result.
Ziwei dates and the 23:00 boundary
Which date should you enter, and why can a late-Zi setting change a chart? A worked example explains the app’s conventions.
Why birth-chart calculators can disagree
Compare the inputs and conventions before comparing interpretations. A practical checklist for Astrologram and other calculators.
Methods and limitations
How Astrologram handles birth times, chart conventions, symbolic scores, and tarot reflections.
Data and support
How current features use your details, and what supporting Astrologram means.