Sinnai, Sìnnia in Sardinian language, is a comune (municipality) of the Cagliari metropolitan area in the Province of Cagliari in the Italian region Sardinia, located about 12 kilometres (7 mi) northeast of Cagliari. According to 2011 census, it has 16,730 inhabitants.
Population: 15,791
Latitude: 39° 18' 10.30" N
Longitude: 9° 12' 10.19" E
The Osservatorio Astronomico di Cagliari (Cagliari Observatory, OAC) is an astronomical observatory owned and operated by Italy's Istituto Nazionale di Astrofisica (National Institute for Astrophysics, INAF). It is located 20 km away from Cagliari i…