Valongo is located in Portugal (Porto) and time zone Europe/Lisbon.
Places nearby are Campo, Fânzeres and Baguim do Monte.
Braga is 40 km away, Coimbra is 108 km away and Amadora is 274 km away as the crow flies.
Distances from Valongo to the most important cities in Portugal and the world.
41.1888300°
-8.4985700°
University observatory in Rio de Janeiro, Brazil
https://en.wikipedia.org/wiki/Valongo_Observatory