@zodiacs/engine notice
========================

Astronomy Engine
----------------

The core runtime depends on astronomy-engine 2.1.19, Copyright (c) 2019-2023
Don Cross, distributed under the MIT License. Its distributed JavaScript source
retains the full MIT permission and warranty notice. Source and license metadata:
https://github.com/cosinekitty/astronomy

GeoNames
--------

The optional @zodiacs/engine/geo client can read a compact index derived from
GeoNames cities15000, admin1CodesASCII, and countryInfo. GeoNames data is
licensed under Creative Commons Attribution 4.0 International (CC BY 4.0):

  https://www.geonames.org/
  https://creativecommons.org/licenses/by/4.0/

The Zodiacs.org index rounds latitude and longitude to two decimal places,
interns timezone, administrative-area, and country strings, sorts cities by
population, and shards records by the first folded ASCII letter. No GeoNames
records are bundled in this npm package. If you host, copy, or redistribute a
compatible GeoNames-derived index, retain this notice and attribution.

Timezone data
-------------

@zodiacs/engine/geo does not redistribute the IANA Time Zone Database. Local
time conversion uses the host JavaScript runtime's Intl/ICU data. Historical
coverage, including pre-standardization local mean time, therefore depends on
the browser or Node.js build used by the consumer.
