Development Status
- 5 - Production/Stable
Intended Audience
- Developers
- Information Technology
Natural Language
- English
Operating System
- OS Independent
Topic
- Software Development :: Localization
timezonefinder-data
The timezone boundary data used by timezonefinder, compiled from timezone-boundary-builder releases into the binary format described in the data format reference.
pip install timezonefinder installs this package automatically - there is nothing
extra to do. It is a separate distribution so that a new boundary release can ship
without a timezonefinder release, and so that a deployment can pin the dataset its
answers came from:
pip install "timezonefinder-data==3.2026.3.post1"
The version reads <format>.<year>.<letter>[.postN]: the year and numbered letter
name the
timezone-boundary-builder release (2026c -> 2026.3), and the major is the binary
data format generation. A .postN suffix identifies revised compiled data made from
the same upstream release. timezonefinder requires a data version inside the format
generation it can read, so an ordinary data update needs no code release while a
format change is refused by the resolver instead of at the first lookup.
Releases
3.2026.4- timezone-boundary-builder 2026d, 2026-09-21 - Updated the packaged boundaries to upstream 2026d.3.2026.3.post1- timezone-boundary-builder 2026c, 2026-09-10 - Recompiled shortcut candidates in estimated full-lookup work order.3.2026.3- timezone-boundary-builder 2026c, 2026-09-02 - Introduced shortcut format 3 with conservative polygon-cell overlap coverage.2.2026.3- timezone-boundary-builder 2026c, 2026-08-23 - Added latitude-block indexes and packed coordinate payloads.1.2026.3- timezone-boundary-builder 2026c, 2026-08-18 - First standalone data distribution.
License
The boundary data is licensed under the Open Database License (ODbL), see
DATA_LICENSE. The timezonefinder source code is MIT licensed.