About

timezonefinder is a python package providing offline timezone lookups for WGS84 coordinates.

Architecture walks through the lookup pipeline end to end, the three point-in-polygon backends and the trade-offs that were deliberately not taken. Data Format documents the binary layouts it reads, and Alternatives compares this package against the other options.

License

timezonefinder is licensed under the MIT license.

The data ships in the separate timezonefinder-data distribution and is licensed under the ODbL license, following the base dataset from evansiroky/timezone-boundary-builder.