Privacy Policy

At BaziTools.com (“we”, “our”, or “the Observatory”), we respect the deeply personal nature of birth dates, birth times, and relationship synastry queries. This Privacy Policy explains what information is processed when you use our calculators and encyclopedias.

1. Local Ephemeris Calculation & Zero Birth-Data Retention

All Four Pillars (BaZi), Zi Wei Dou Shu, Feng Shui Kua, I Ching, and Tong Shu Almanac calculations run directly in your browser using deterministic astronomical libraries (tyme4ts, lunar-typescript, and iztro). Your birth date, exact clock minute, city coordinates, and True Solar Time offsets are processed locally in browser memory and are never uploaded to or stored in any public server database.

2. Voluntary Email Subscriptions (Lead Magnets)

If you voluntarily submit your email address to request a printable PDF guide or personalized chart sheet, we use your email solely to deliver the requested archival materials and occasional solar-term updates. You may unsubscribe with one click at any time, and we never sell, rent, or broker subscriber addresses to third parties.

3. Analytics & Anonymous Telemetry

We use Google Analytics 4 (GA4) to measure aggregate page views and tool interaction counts (such as which encyclopedia hubs are most helpful). No personally identifiable birth records are transmitted in analytics events.

4. GDPR, CCPA & International Privacy Rights

Visitors from the European Economic Area (EEA), the United Kingdom, and California hold the right to access, rectify, export, or erase any personal contact information voluntarily submitted to our newsletter archive. Because birth chart calculations are stateless and executed client-side, no server-side natal profile exists to be profiled or tracked across sessions unless you explicitly save a local browser bookmark.

5. Contact & Data Deletion Requests (24-Hour SLA)

For any privacy inquiries or to request deletion of a subscribed email address, please contact our archival desk at admin@bazitools.com or visit our Contact Page. We guarantee a response within 24 hours.