# TzWorld v2.4.0 - Table of Contents

Resolve time zone names from a location.

## Pages

- [TzWorld](readme.md)
- [LICENSE](license.md)
- [CHANGELOG](changelog.md)

- Guides
  - [Performance](performance.md)

## Modules

- [TzWorld](TzWorld.md): Resolve a timezone name from coordinates.
- [TzWorld.TimezoneFixtures](TzWorld.TimezoneFixtures.md): Coordinate fixtures used by the test suite and the benchmark.

- Backends
  - [TzWorld.Backend](TzWorld.Backend.md): Defines the callbacks for the TzWorld.Backend
behaviour
  - [TzWorld.Backend.DetsWithIndexCache](TzWorld.Backend.DetsWithIndexCache.md): Resolves a timezone from a coordinate using a DETS file of timezone
shapes together with an in-memory index of their bounding boxes.
  - [TzWorld.Backend.EtsWithIndexCache](TzWorld.Backend.EtsWithIndexCache.md): Resolves a timezone from a coordinate using an ETS table of timezone
shapes, populated from the DETS cache at startup.
  - [TzWorld.Backend.SpatialIndex](TzWorld.Backend.SpatialIndex.md): Resolves timezones from a coordinate using an R-tree spatial index
held in `:persistent_term`.

- Internals
  - [TzWorld.Downloader](TzWorld.Downloader.md): Function to support downloading the latest
timezones geo JSON data

## Mix Tasks

- Mix tasks
  - [mix tz_world.update](Mix.Tasks.TzWorld.Update.md): Downloads and installs the latest Timezone GeoJSON data.