This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
ZenithNadirHorizonsr.svg en An SVG to show the relationship between Zenith Nadir Horizon File ZenithNadirHorizon svg User DTR me as translator Horizon diagrams
Page 2023 Free-images.com. All images are Public Domain