License Information

This project uses separate licenses for its source code and the data it produces.

Code License

The code used to construct the timezone boundaries is licensed under the MIT License.

The MIT License (MIT)
Copyright (c) 2016 Evan Siroky

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Data License

The outputted data is licensed under the Open Data Commons Open Database License (ODbL) v1.0.

Open Database License (ODbL) v1.0

Preamble
The Open Database License (ODbL) is a license agreement intended to
allow users to freely share, modify, and use this Database while
maintaining this same freedom for others. Many databases are covered by
copyright, and therefore this document licenses these rights. Some
jurisdictions, mainly in the European Union, have specific rights that
cover databases, and so the ODbL addresses these rights, too. Finally,
the ODbL is also an agreement in contract for users of this Database to
act in certain ways in return for accessing this Database.

...
The full text of the ODbL v1.0 is available in the DATA_LICENSE file in the repository.