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  2. Prague astronomical clock - Wikipedia

    en.wikipedia.org/wiki/Prague_astronomical_clock

    The Orloj is mounted on the southern wall of Old Town Hall in the Old Town Square.The clock mechanism has three main components – the astronomical dial, representing the position of the Sun and Moon in the sky and displaying various astronomical details; statues of various Catholic saints stand on either side of the clock; "The Walk of the Apostles", an hourly show of moving Apostle figures ...

  3. Category : Astronomical clocks in the Czech Republic

    en.wikipedia.org/wiki/Category:Astronomical...

    Prague astronomical clock This page was last edited on 24 February 2020, at 11:07 (UTC). Text is available under the Creative Commons Attribution-ShareAlike 4.0 ...

  4. Astronomical clock - Wikipedia

    en.wikipedia.org/wiki/Astronomical_clock

    Face of the Prague astronomical clock, in Old Town Square. An astronomical clock, horologium, or orloj is a clock with special mechanisms and dials to display astronomical information, such as the relative positions of the Sun, Moon, zodiacal constellations, and sometimes major planets.

  5. Old Town Square - Wikipedia

    en.wikipedia.org/wiki/Old_Town_Square

    Prague Orloj is a medieval astronomical clock mounted on the Old Town Hall. The clock was first installed in 1410, making it the third-oldest astronomical clock in the world and the oldest one still in operation. The tower of the Old Town Hall is open to the public and offers panoramic views of the Old Town.

  6. List of astronomical instruments - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    An astronomical instrument is a device for observing, measuring or recording astronomical data. They are used in the scientific field of astronomy, a natural science that studies celestial objects and the phenomena that occur in the cosmos, with the object of explaining their origin and evolution over time. Many are also used in navigation and ...

  7. International astronomy group joins calls for a lunar clock ...

    www.aol.com/news/international-astronomy-group...

    The International Astronomical Union voted Thursday encouraging space organizations across the globe to collaborate on a timekeeping standard for the moon, where one day lasts 29.5 Earth days.

  8. Jan Šindel - Wikipedia

    en.wikipedia.org/wiki/Jan_Šindel

    Šindel's astronomical tables and maps were allegedly still used by Tycho Brahe. He had a special liking for astronomical devices. Based on his suggestion and calculations, Mikuláš of Kadaň constructed the Prague Orloj clock in 1410. [1] The Šindel sequences in mathematics are named from the appearance of one of these sequences in this ...

  9. Martin Chaloupka's astronomical clock - Wikipedia

    en.wikipedia.org/wiki/Martin_Chaloupka's...

    The astronomical clock in its previous location in Kryštofovo Údolí. Martin Chaloupka's astronomical clock is an astronomical clock in Liberec District, Czech Republic. It was built in 2006–2011 in Kryštofovo Údolí, and was moved to Žibřidice (in the obec of Křižany) in 2023. The clock's construction was directed by Martin Chaloupka ...