Events from Wikidata; descriptions from Wikipedia (CC BY-SA); photographs from Wikimedia Commons under the licence shown in each panel.

Earth: NASA Blue Marble. Borders: Natural Earth. Sky: rendered from the Yale Bright Star Catalog and Milky Way contours (via d3-celestial) — every star to magnitude 6 at its catalog position and colour. Sun, Moon and planet positions: astronomy-engine.

The sky is the real sky for the moment shown: the Moon at its true distance, size and phase, the Sun at its true apparent size, the Earth lit from the Sun's actual direction. Open a dated event and the sky becomes that day's.