Calculate a natal chart locally

This example uses synthetic inputs and an unpublished engine candidate. The exact engine version and artifact claims appear in each locally calculated receipt. It needs no account and sends no birth input to a server. Calculations run in this tab.

Enter a resolved instant with Z or an explicit offset. This example does not infer a timezone or resolve historical daylight-saving gaps and folds. At an unknown birth time, noon UTC is an approximation; the Moon may differ substantially.

Synthetic birth input

Ready with a synthetic polar case. Expect whole-sign fallback and an Aries ascendant.

Local draft JSON export and import

A full export includes the birth instant, coordinates, calculation result, and any retained optional data. Export only when you intend to save those details in a local file. Imported files remain unverified claims; this Zodiacs draft is not an industry standard.

Import displays the stored receipt and result without changing the birth form or recalculating. Optional extensions are preserved for re-export and are not displayed. No file is uploaded or added to an account.

The diagnostic omits dates, coordinates, results, and arbitrary imported data. It is redacted, not anonymous; remaining time-known, house, and flag categories can still disclose context.





Draft calculation receipt
No calculation yet.


Result
No calculation yet.


Offline demonstration: load this page completely, disconnect the network, then calculate, export, or import locally. Navigation and refresh still need the local server. The app writes no account or browser storage; an explicitly exported file remains on your device. Browser history restoration and extensions are outside the app's control.


Accepted dates are not a promise of accuracy across that range. Numerical review and publication gates remain open. Dependency notices.