Caelum

Caelum turns your desktop background into a live sky: the real position of the
sun, moon, planets and stars for your location, with clouds, rain and snow from
live weather data (Open-Meteo and MET Norway, no API key needed).

- 240° panorama centred on your screen's real-world facing direction
- Moon phase with correct crescent orientation for your latitude
- Weekly and hourly forecast
- Optional export of the sky as wallpaper / lock screen