How dark is the sky in Lublin?

Sky darkness for 11 towns and parks in Lublin, worked out from NASA satellite images of light at night (2025). 7 of them have skies of Bortle 4 or darker, where the Milky Way shows overhead. The darkest is Sobibór Landscape Park (21.67, Bortle 4), the brightest Lublin (18.29, Bortle 8). The bright core of the Milky Way never climbs clear of the horizon haze anywhere in Lublin while the sky is fully dark; the rest of the band passes overhead, with the longest moonless nights from September to March.