Tuscany; Florence; Basilica di San Lorenzo (Basilica of St Lawrence); Sagrestia Vecchia (Old Sacristy): frescoe on ceiling of the small dome (cupola) above the altar with star constellations above Florence in the night of 4th of July 1442; realized most probably by Giuliano d`Arrigo according to advice of astronomer Paolo dal Pozzo Toscanelli; The date of the star constellation was confirmed via studies during restauration works 1984 - 1989. In 1911; Aby Warburg dated it with help of an astronomer at 9th of July 1422. Later on; Arthur Beer found the date 6th of July 1439 most convenient.