https://en.wikipedia.org/wiki/Astronomical_clock
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. Definition

https://en.wikipedia.org/wiki/Prague_astronomical_clock
The Prague astronomical clock or Prague Orloj ( Czech: Pražský orloj [praʃskiː orloj]) is a medieval astronomical clock attached to the Old Town Hall in Prague, the capital of the Czech Republic . The clock was first installed in 1410, making it the third-oldest astronomical clock in the world and the oldest clock still in operation.

https://www.prague.eu/en/object/places/3129/astronomical-clock
Learn about the medieval tower clock in the Old Town Hall Tower, which shows the time, the calendar and the parade of the Twelve Apostles. Find out how to visit the clock, see the 3D virtual tour and download the brochure.

https://prague.org/prague-astronomical-clock/
Learn about the medieval Orloj Clock Prague, the third-oldest clock of its kind still in operation. Find out how to get there, when to visit, and what to see around the Old Town Square.

https://interestingengineering.com/innovation/the-secrets-of-the-prague-astronomical-clock
The Prague Astronomical Clock was first installed in 1410. This makes it the world's third-oldest astronomical clock and the oldest still in operation today. At the time of writing, this makes

https://www.introducingprague.com/astronomical-clock
Learn about the world's most famous Medieval clock, built in 1410 and located on the Town Hall wall. Discover its three dials, the moving 12 Apostles sculptures, and how to visit the Town Hall Tower.

https://delveintoeurope.com/prague-astronomical-clock/
The Astronomical Clock is close to the base of the Old Town Hall Tower in Prague Old Town Square - Staroměstské náměstí in Czech. This is the focal point of Old Town Prague. The Clock is on the south-facing side of the tower, so the sun tends to shine on it for much of the daytime.

https://www.praguego.com/attractions/astronomical-clock-orloj/
Learn about the legend, the mechanism and the show of the Prague Astronomical Clock, a 15th-century technical miracle in Old Town Square. Find out how to visit, watch and enjoy this historical attraction with virtual tours, videos and live stream.

https://www.atlasobscura.com/articles/astronomical-clocks-are-the-most-beautiful-way-to-track-the-hours-the-years-and-the-moon
Learn about the history and design of astronomical clocks, which not only tell the time of day, but also track the movement of the planets, the moon, and the stars. See stunning photos of some of the most ornate and complex clocks in Europe.

https://www.thevintagenews.com/2018/03/08/prague-astronomical-clock/
The Astronomical Dial is probably the oldest of all clock components and is one of the main reasons why the Prague clock is so unique. This element splendidly illustrates how people of the medieval era observed the universe. Of course, it is the Earth represented in the center of it. The dial's bits of blue stand for the skies beyond the

https://www.praguebehindthescenes.com/how-to-read-the-astronomical-clock/
The tower with the Astronomical Clock is actually open to the public! You can walk up to the top (fantastic views!!). On the first opening hour there is a 50 % discount on the entry. The clock itself from outside is free of charge and open 24/7!!! Prague Astronomical Clock before the crowds come. Astronomical Clock - crowded - later in the

https://mymodernmet.com/prague-astronomical-clock/
The oldest part of the Prague astronomical clock—or Orloj —dates to 1410 and is located in the heart of Old Town Square. Less than a hundred years later, the calendar dial was added and Gothic sculptures were installed to adorn the clock tower. Now, tourists flock to Old Town Square to gaze up at Prague Orloj, with many waiting until the

https://www.prague.eu/en/articles/timeline-14397
Learn about the origins, development and restoration of the Prague Astronomical Clock, a unique medieval device that shows the time, the date and various astronomical phenomena. Discover the key events and figures that shaped the history of this cultural and historical landmark of Prague.

https://freetoursbyfoot.com/how-prague-astronomical-clock-works/
The Prague astronomical clock, also known as Prague Orloj, is visited by astronomical numbers of tourists each year. It's been a draw since 1410. It's the oldest working astronomical clock in the world. It's just over 600 years old. This beautiful medieval clock can be found in Old Town Square, on the wall of the Old Town Hall.

https://www.astronomy.com/science/the-secrets-and-scandal-of-the-prague-astronomical-clock/
The astronomical clock has been repaired many times throughout the years, and the moving gears and components restored. On May 8, 1945, the tower nearly collapsed during Nazi attacks in World War II.

https://www.atlasobscura.com/places/prague-astronomical-clock
In Czechia, the Prague Astronomical Clock is known simply as the Orloj, from the Latin word horologium. As the saying goes, imitation is the highest form of flattery. When it was created, the

http://www.orloj.com/
The Sphere or clock dial is the central part of the Orloj and represents the astronomical phenomena such as sunrise and sunset, ancient Czech and present day time, movements of the Sun and the Moon and other relative celestial configurations. and the apparent revolutions of the stars (the ecliptic, to be more precise).

https://www.thoughtco.com/mysterious-astronomical-clock-in-prague-175977
Learn about the oldest and most ornamental clock in the world, located in the Old Town Hall of Prague. Discover its complex workings, its astronomical and zodiac symbols, and its mysterious stories of a blinded clockmaker and a silent clock.

https://www.laidbacktrip.com/posts/astronomical-clock-prague-guide
The Astronomical Clock was constructed by clockmaker Mikulas of Kadan and mathematician Jan Sindel in the 15th century (the first record is from 1410). Later, the calendar dial and gothic sculptures were added. Orloj has been repaired several times in the past, including major damage suffered during the Prague uprising (end of WW2).

https://www.ancient-origins.net/artifacts-ancient-technology/astronomical-clock-prague-021229
A particularly impressive example of this technical skill is the astronomical clock at the old town hall in Prague, the modern-day capital of the Czech Republic. The Prague astronomical clock was constructed in 1410 and contains dials which track the motion of the sun and moon through the year in both Central European Time and Old Czech Time.

https://www.grunge.com/762002/the-astonishing-engineering-of-pragues-astronomical-clock/
Prague's Astronomical Clock, more properly the "Orloj" (pronounced "OR-loy"), is a stunning engineering marvel. From the outside, it looks like a color-coded, multi-layered, brightly painted clock-face of golden whorls and arcane symbolism. Inside, it's a brain-bustlingly convoluted mechanism of endlessly churning weights, pulleys, ropes, and

https://en.wikipedia.org/wiki/Strasbourg_astronomical_clock
The Strasbourg astronomical clock is located in the Cathédrale Notre-Dame of Strasbourg, Alsace, France. It is the third clock on that spot and dates from the time of the first French possession of the city (1681-1870). The first clock had been built in the 14th century and the second in the 16th century when Strasbourg was a Free imperial

https://orloj.org/orloj/
A simulation of the Prague Astronomical Clock (Pražský Orloj), configurable for any location on Earth, with user-settable time. Prague, CZE . 0 0 . 6 0 / 0 0 . 3 0 / 2 0 . 0 0 . 2 0 . 4 0 , 1 0 . 0 0 : 1 0 . 3 0 . AM AM PM § ^ § # ~ ? . ISO time format ... Original SVG clock graphics by Jan Tošovský

https://www.msn.com/en-us/news/technology/why-scientists-say-we-need-to-send-clocks-to-the-moon-and-soon/ar-BB1nkn19
Atomic clocks, Gramling noted, are great for long-term stability, and crystal oscillators have an advantage for short-term stability. ... such as the International Astronomical Union.

https://hackaday.com/2024/05/31/tell-time-and-predict-the-heavens-with-this-astronomical-timepiece/
The Astronomical Clock's mechanical elements are driven by a single stepper motor, and the only gear is the one that interfaces the motor shaft to the rest of the device. An ESP32-C3

https://www.cnn.com/2024/05/30/science/lunar-time-zone-scale-nasa-artemis-scn/index.html
Clocks on the moon's equator would tick 56.02 microseconds faster per day than clocks at the Earth's equator, according to the paper. ... such as the International Astronomical Union.

https://aas.org/posts/news/2024/06/june-2024-issue-physics-today-online-mail
Physics Today, the flagship publication of the American Institute of Physics (AIP), is the most influential and closely followed physics magazine in the world.With authoritative features, full news coverage and analysis, and fresh perspectives on technological advances and groundbreaking research, Physics Today informs readers about science and its role in society.

https://www.wsj.com/articles/while-alvin-bragg-was-having-a-trump-trial-new-york-crime-rate-47234917
If those numbers sound astronomical, keep in mind that roughly 1.6 million people live in Manhattan. What's important is the trend, and it isn't encouraging.

https://www.gq.com/story/rafael-nadal-richard-mille-rm-27-05
Impractical for most given its astronomical price (unclear at press time but likely well over $1 million) as well as its minimal water resistance, its material advances are nevertheless exciting