Earth imagery: Solar System Scope / INOVE, based on NASA elevation and imagery.
Source: https://www.solarsystemscope.com/textures/
Licence: Creative Commons Attribution 4.0 International
https://creativecommons.org/licenses/by/4.0/

Day colour: 8k_earth_daymap.jpg (original), with native 8192 x 4096 WebP detail.
City lights: 8k_earth_nightmap.jpg, with native 8192 x 4096 WebP detail
and 4096 x 2048 and 2048 x 1024 fallbacks.
https://www.solarsystemscope.com/textures/download/8k_earth_nightmap.jpg
Surface detail progressively upgrades to 8K on capable desktops and 4K on mobile.
Initial 4K/2K maps remain available on data-saving or limited-memory devices.
No map is upscaled. Native 2K normal, ocean and cloud detail is used on desktop.
Clouds: 2k_earth_clouds.jpg (original)
Normal: 2k_earth_normal_map.tif, converted to PNG
Ocean specular mask: 2k_earth_specular_map.tif, converted to PNG
Colour, lighting, normal strength and cloud opacity adjusted by Awaya in the renderer.
Cloud patterns are illustrative texture imagery, not live weather data.
Day, dawn, evening and night lighting follows the viewer's device-local clock,
including its configured timezone. No location lookup or clock data is sent.
This is local-time visual styling, not a real-time astronomical sunlight map.

City lookup: GeoNames, CC BY 4.0.
https://www.geonames.org/
https://download.geonames.org/export/dump/cities15000.zip
Downloaded 24 September 2026. Filtered to populated places (excluding city sections),
reduced to names, city-centre coordinates and country codes, rounded to 4 decimals.
The nearest listed city is an approximation, not an administrative-boundary lookup.

Airport chooser: OurAirports (public domain).
https://ourairports.com/data/
https://davidmegginson.github.io/ourairports-data/airports.csv
Downloaded 24 September 2026. Filtered to scheduled-service airports with IATA codes.
This community-maintained dataset does not guarantee operating status or suitable routes.
Nearby airports are suggestions; travellers can select their preferred departure airport.

Optimised WebP derivatives are generated from the existing Earth and destination assets.
Static globe posters are rendered from the same attributed Earth imagery.