Open data in Atlas
Atlas shows data that governments, international organizations and open projects publish under open licences. The app credits every source, with its licence and a link, in Settings > Data sources, and lists the open-source software it uses in Settings > About > Open-source licenses. This page carries the notices some open database licences ask to be published.
Time-zone boundaries
Atlas tells the local time of a place from the time-zone boundaries of timezone-boundary-builder, © OpenStreetMap contributors, as compressed by @photostructure/tz-lookup version 11.7.0, which the app uses unchanged.
Contains information from timezone-boundary-builder, which is made available here under the Open Database License (ODbL).
The database the app uses is tz-lookup’s, published with its source and a description of how it is built at github.com/photostructure/tz-lookup and as the npm package @photostructure/[email protected]. Atlas makes no changes to it. The country of each zone comes from the tz database, which is in the public domain.
Map data
The base map’s tiles are served by OpenFreeMap in the OpenMapTiles schema, made from OpenStreetMap data © OpenStreetMap contributors, available under the Open Database License. Atlas draws the tiles as served and keeps no copy of the database.
The terrain is Mapterhorn’s, made from open elevation models, among them Copernicus WorldDEM-30, the 20 m model of Taiwan’s Department of Land Administration and the Geospatial Information Authority of Japan’s (測量法に基づく国土地理院長承認（使用）R 8JHs 131).