The mechanism was created by an unknown maker, probably in the mid-17th century. At the outer edge of the clock, golden Schwabacher numerals are set on a black background. This marvel is not only an incredible architectural phenomenon that is located in one of the busiest squares and areas. The Orloj suffered heavy damage on May 7 and especially May 8, 1945, during the Prague uprising, when the Nazis fired on the south-west side of the Old Town Square from several armoured vehicles in an unsuccessful attempt to destroy one of the centers of the uprising. This is represented by the zodiacal circle on which the figure of the sun slowly moves through the same process of precession. According to the legend, the only hope was represented by a boy born on New Year's night.. This gear is connected to the sun gear and the moon gear by a 24-tooth gear. The astronomical clock was placed at the front side of the tower in 1410. The golden Sun moves around the zodiacal circle, thus showing its position on the ecliptic. The position of the Gold Sun on the Golden Hand in relation to the Golden Arch Lines on the background will tell you what time it is based on Unequal Hours. Prague’s astronomical clock makes use of the precession of the sun - where the sun, from the perspective of Earth, slowly moves along the ecliptic plane through the year with respect to the background stars. The clock stopped working many times in the centuries after 1552, and was repaired many times. The Old Town Astronomical Clock is a com-plicated and multilayered work. Whether using an in-wall time switch or a 365-day programmable digital electronic controller, timers with both astronomic and Daylight Saving Time (DST) functionality automatically adjust to the seasonal day-to-night time changes throughout the year. The signs are shown in anticlockwise order. The red and black areas indicate portions of the sky below the horizon. During dawn or dusk, the mechanical sun is positioned over the red part of the background. Staré Město, Zlin Region, Czechia 01-04-2020 02:13 PM. The story said that the clock was admired by many foreigners, but Hanus refused to show construction plans to anybody. Less than a hundred years later, the calendar dial was … The purpose of the astronomical clock was to measure time and to show the position of celestial bodies within the Ptolemaic Solar System, in which it is remarkable that the sun is not the centre of the composition, but Earth. Finally, the Turk tells pleasure and entertainment. Follow the Golden Hand (9) to see the current time on the standard 24 hour clock. The Sun and its hand are on the 365-tooth gear inside the machine. The 4 figures are set in motion on the hour. While we work as hard as we can to ensure the information provided here about Prague Old Town Hall and Astronomical Clock is as accurate as possible, the changing nature of certain elements mean we can't absolutely guarantee that these details won't become a thing of the past. Guide from www.sightseeing-prague.com describes how does it work. It was believed, that the author was clockmaster Hanus, also called Jan of Ruze, who lived in the 15 th century. Notice how the Arch Lines on the top of the clock have the numbers 1-12 on them going from Sunrise on the left to Sunset on the right? The sun is attached to an arm with a golden hand, and together they show the time in three different ways: Additionally, the distance of the Sun from the center of the dial shows the time of sunrise and sunset. Every whole hour, 12 Apostles parade in the windows of the astronomical clock. During the daytime, the Sun sits over the blue part of the background and at night it sits over the black.  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