Stellarium Web
TLF ID A003050
Stellarium provides a web-based version of a planetarium that allows users to explore what's visible in the sky from any location in the world. It calculates the positions of the Sun and Moon, planets and stars, and draws how the sky would look to an observer depending on their location and the time. It can also draw the constellations and simulate astronomical phenomena such as meteor showers or comets, and solar or lunar eclipses.