{"id":61275,"date":"2020-04-15T18:28:49","date_gmt":"2020-04-15T16:28:49","guid":{"rendered":"http:\/\/imperiumromanum.pl\/?post_type=ciekawostki&p=61275"},"modified":"2020-08-31T18:30:21","modified_gmt":"2020-08-31T16:30:21","slug":"largest-sundial-solarium-augusti","status":"publish","type":"ciekawostki","link":"https:\/\/imperiumromanum.pl\/en\/curiosities\/largest-sundial-solarium-augusti\/","title":{"rendered":"Largest sundial (Solarium Augusti)"},"content":{"rendered":"

Horologium Solarium Augusti<\/b><\/em> was the largest sundial and calendar<\/a> of all time. The monument was located in Rome<\/a> on Field of Mars<\/a>. Currently, this obelisk is located in Piazza Montecitorio in Rome in front of the Chamber of Deputies. <\/p>\n

For its construction, an obelisk brought from Heliopolis in Egypt<\/a> by Octavian Augustus<\/a> was used, which was to be a symbol of Egypt’s subordination to Rome. This obelisk was 30 meters high and was made of red granite. He played the role of a gnomon or a vertical pointer, whose shadow cast on a shield placed in the horizon plane indicated time. The shield was a marble floor, which had bronze lines on which to base the time of day.<\/p>\n

The whole building was crowned with a sphere, which symbolized the whole world. This clock began to be erected with the construction of Ara Pacis<\/a><\/em> in 13 BCE. The shadow of the obelisk on the birthday of Emperor Agust – September 23 – pointed to the heart of the altar. This clock together with Ara Pacis<\/em><\/a> heralded a new era of peace, the time of Augustus<\/a>.<\/p>\n

The building was dedicated to the deity Sol<\/a> in 10 BCE and it was the first “gesture” of this type towards this god. The inauguration of the building probably took place in the same year as the dedication Ara Pacis<\/em> – 9 BCE. It is worth noting that the same year there was a correction of the Julian calendar<\/a> – it turned out that the leap year occurred every third year and not every fourth one as assumed by the calendar.<\/p>\n

Later, Pliny the Elder<\/a> mentioned that the clock did not indicate the time of day and was inaccurate, which he tried to explain by the fact that the earth could have fallen as a result of earthquakes and floods.<\/p>\n","protected":false},"featured_media":36824,"template":"","meta":{"_acf_changed":false,"footnotes":""},"kategorie_ciekawostek":[77],"class_list":["post-61275","ciekawostki","type-ciekawostki","status-publish","has-post-thumbnail","hentry","kategorie_ciekawostek-unknown-facts"],"acf":[],"_links":{"self":[{"href":"https:\/\/imperiumromanum.pl\/en\/wp-json\/wp\/v2\/ciekawostki\/61275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/imperiumromanum.pl\/en\/wp-json\/wp\/v2\/ciekawostki"}],"about":[{"href":"https:\/\/imperiumromanum.pl\/en\/wp-json\/wp\/v2\/types\/ciekawostki"}],"version-history":[{"count":0,"href":"https:\/\/imperiumromanum.pl\/en\/wp-json\/wp\/v2\/ciekawostki\/61275\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/imperiumromanum.pl\/en\/wp-json\/wp\/v2\/media\/36824"}],"wp:attachment":[{"href":"https:\/\/imperiumromanum.pl\/en\/wp-json\/wp\/v2\/media?parent=61275"}],"wp:term":[{"taxonomy":"kategorie_ciekawostek","embeddable":true,"href":"https:\/\/imperiumromanum.pl\/en\/wp-json\/wp\/v2\/kategorie_ciekawostek?post=61275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}