York Minster Astronomical Clock History and Function

The York Minster Astronomical Clock is a stunning timepiece that has been a central feature of York Minster since the 15th century. It's one of the oldest and most intricate clocks in the world.

Built in the 1400s, the clock has been a vital part of the Minster's architecture for over 600 years. Its intricate mechanisms and beautiful carvings have made it a beloved landmark in York.

The clock's face is decorated with 18 figures, including prophets, apostles, and saints, which are said to represent the 18 months of the year. These figures are arranged in a specific pattern to show the months in sequence.

The clock's central mechanism is powered by weights and pulleys, which drive the clock's hands and other features.

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York Minster Cathedral is a stunning place to visit, and it's even more impressive when you know its rich history. The cathedral has been standing for over 1,500 years, with the first church built in 627 to baptize King Edwin of Northumbria.

The present building was begun in about 1230 and completed in 1472, with a cruciform plan and an octagonal chapter house attached to the north transept. The stone used for the building is magnesian limestone.

The Minster is 158 metres long and each of its three towers are 60 metres high, making it a breathtaking sight to behold.

York Minster Cathedral is located in the heart of York, England. The cathedral's North Transept is home to the impressive York Minster astronomical clock.

The clock features two main faces displaying celestial movements, with a central map of York showing the Minster highlighted in gold leaf. Visitors can view the clock during York Minster opening hours.

Located near the Five Sisters window, the clock is a striking feature of the cathedral. The front dial displays the Sun and navigational stars from a pilot's perspective flying above York, with curved wires indicating altitude lines.

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York Minster Cathedral is located in the heart of York, a city in northeast England. It's situated on the site of a 7th-century church and has been a major place of worship for over 1,400 years.

The cathedral is nestled in the city's historic center, surrounded by narrow streets and medieval buildings. It's a short walk from York's famous Shambles street and the city's famous walls.

York Minster Cathedral is easily accessible by car, with several parking options nearby. However, it's worth noting that driving in York's historic center can be challenging due to narrow streets and limited parking.

The cathedral is also a short walk from York railway station, making it a convenient destination for visitors arriving by train.

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York Minster Cathedral has a rich and complex history that spans over a thousand years. The first church was built in 627 to baptize King Edwin of Northumbria.

The church has undergone numerous transformations, with a stone structure being completed around 637 and dedicated to Saint Peter. However, it fell into disrepair and was dilapidated by 670.

A fire in 741 destroyed the church, but it was rebuilt with a more impressive structure containing thirty altars. This structure was destroyed by the Danes, but it was eventually repaired and remodeled in the Norman style.

The archbishop, Walter de Gray, ordered the construction of a Gothic structure to rival Canterbury Cathedral. The north and south transepts were built in the Early English Gothic style.

The Chapter House was completed before 1296, and the outer roof was finished in the 1330s. The vaulting was finished in 1360, and the central tower collapsed in 1407.

A new tower was built from 1420, and the western towers were added between 1433 and 1472. The cathedral was declared complete and consecrated in 1472.

The Minster's floor was relaid in patterned marble from 1730 to 1736. However, an accidental fire in 1840 left the nave, south west tower, and south aisle roofless and blackened.

Another fire in 1984 destroyed the roof in the south transept, but restoration work was completed in 1988. The work included new roof bosses and brought the cathedral back to its former glory.

The Minster's stone is magnesian limestone, and the building is 158 meters long. Each of its three towers stands at 60 meters high, and the choir has an interior height of 31 meters.

The North and South transepts have simple lancet windows, with the Five Sisters being one of the most famous. The Rose Window commemorates the union of the royal houses of York and Lancaster.

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The front dial of the York Minster astronomical clock is a masterpiece of astronomical engineering, showing the locations of the Sun and certain navigational stars as seen by a pilot flying south above York Minster.

A circular plate, about 62 cm in diameter, carries a ground plan of the Minster and surrounding markings representative of city walls, rivers, and principal roads, with the edge of the plate representing the effective horizon and its centre identifying the pilot's nadir.

The star-planisphere, mounted behind the plate, rotates once in a sidereal day on an axis passing through its south celestial pole and located some 13 cm above the centre of the horizon plate.

For decoration, the star-planisphere carries a few basic star patterns, considerably distorted due to the projection used, and an eccentric zodiac/ecliptic/calendar ring faced with silver, restricted in width to the distance between the solstitial points.

The sun-emblem and horizon-plate combine to show the times of the Sun's rising, southing, and setting throughout the year, and the extent of the twilight, thanks to the rays of the sun emblem.

Two sets of curved wires are mounted in front of the planisphere, indicating lines of equal altitude and supplementing the edge of the horizon plate, while the second set forms a complete circle and the sectors of two larger circles.

The rear planisphere, similar in size to the front one, displays the brightest stars of the main circumpolar constellations, centred on the north celestial pole and rotating once a sidereal day relative to a fixed meridian-index.

The 24 hour intervals on the rear planisphere's encircling silvered ring are a useful feature for tracking time.