Jupiter (mythology) Hill, where the citadel was located. In the Capitoline Triad, he was the central guardian of the state with Juno and Minerva. His sacred tree was the oak. The Romans regarded Jupiter as the equivalent of the Greek Zeus, and in Latin literature and Roman art, the myths and iconography of Zeus are adapted under the name "Iuppiter". In the Greek-influenced tradition, Jupiter was the brother of Neptune and Pluto, the Roman equivalents of Poseidon and Hades respectively. Each presided over one of the three realms of the universe: sky, the waters, and the underworld. The Italic Diespiter was also
Neptune (mythology) In this respect he was the equivalent of Mars, Janus, Saturn and even Jupiter among Latin tribes. Salacia would represent the virile force of Neptune. The Neptunalia was the festival of Neptune on July 23, at the height of summer. The date and the construction of tree-branch shelters suggest a primitive role for Neptune as god of water sources in the summer's drought and heat. The most ancient Roman calendar set the "feriae" of Neptunus on July 23, two days after the Lucaria of July 19 and 21 and two days before the Furrinalia of July 25. Georg Wissowa had