> I'd just kind of like to see a version that showed real nighttime imagery, even if it was mostly super-dark (but they could HDR it which would be fine too).
The image that’s being used here (for the US imagery) is what CIRA calls GeoColor: true-color imagery during the day (with simulated green channel; the GOES-R satellites don’t have a green channel), and multispectral IR composited on top of a static city lights image at night.
It wouldn’t just be super-dark; it would be black. The GOES visible light sensors do not produce any useful data after dark. (See it yourself: https://www.star.nesdis.noaa.gov/GOES/fulldisk_band.php?sat=... ... this is the blue channel.)
The image that’s being used here (for the US imagery) is what CIRA calls GeoColor: true-color imagery during the day (with simulated green channel; the GOES-R satellites don’t have a green channel), and multispectral IR composited on top of a static city lights image at night.