change http://solar-center.stanford.edu/AO/sunrise.html http://solar-center.stanford.edu/AO/sunrise.html http://solar-center.stanford.edu/AO/sunrise.html "Where Do the Sun and Stars Rise?" Ancient Observatories, Timeless Knowledge http://solar-center.stanford.edu/AO/sunrise.html http://solar-center.stanford.edu/AO/sunrise.html sun http://solar-center.stanford.edu/AO/sunrise.html Stanford Scientists at the Solar Centre solstice sunrise and another to solstice sunset alba e il tramonto cambiano leggermente posizione