Frida Kahlo

Accuracy check

Three artists' charts were recalculated here and compared with the positions Astrotheme publishes. Every planet and both angles agree to within a minute of arc, which is the precision those references are printed to. The New and Full Moon times match the published 2026 dates to the minute.

Birth times and places

Most chart errors come from clock history, not from the planets. This prototype reads each country's time-zone history from the browser and handles:

• Wartime double summer time in Britain (1941) and the all-year British Standard Time experiment (1969)
• Local mean time before standard time existed, such as New York in 1880 and Mexico in 1907
• Countries that used a capital's mean time as the legal time, such as Paris around 1900
• Clock-change nights, where a time either never happened or happened twice

What this prototype shows

• Everything is calculated and drawn in the visitor's browser, including the PDF and PNG files, so it can sit on Squarespace with no server.
• Free visitors see every member feature working on their own chart, with the final step locked.
• The Preview switch flips between the two versions. On the website each page shows one.
• Saved charts stay in this browser only.