Students walk over the giant sundial in front of Morehead Planetarium on the campus of the University of North Carolina at Chapel Hill, North Carolina, U.S., September 20, 2018. Picture taken on September 20, 2018. REUTERS/Jonathan Drake

The sun rises behind the Millennium Sundial in Barrow upon Soar, Britain January 25, 2018. REUTERS/Darren Staples

A man walks his dog past the Millennium Sundial in Barrow upon Soar, Britain January 25, 2018. REUTERS/Darren Staples

A sundial dating back to 1695 is seen on the south-east wall of the old Jesuit University in Valletta, Malta, January 23, 2018. REUTERS/Darrin Zammit Lupi

A pigeon flies in front of a meridian sundial on the facade of the Casino Maltese in Valletta, Malta, January 23, 2018. REUTERS/Darrin Zammit Lupi

A pigeon rests on balcony railings in front of a meridian sundial on the facade of the Casino Maltese in Valletta, Malta, January 23, 2018. REUTERS/Darrin Zammit Lupi

A sundial dating back to 1695, with an inscription in Latin reading "There will be a time when time will cease and there will be eternal light for the good and endless night for the wicked", is seen on the south-east wall of the old Jesuit University in Valletta, Malta, January 23, 2018. REUTERS/Darrin Zammit Lupi

A clock face and sundial are seen on St Sebastian's Church in Qormi, Malta, January 22, 2018. REUTERS/Darrin Zammit Lupi

A clock face and sundial are seen on St Sebastian's Church in Qormi, Malta, January 22, 2018. REUTERS/Darrin Zammit Lupi

A clock face and sundial are seen on St Sebastian's Church in Qormi, Malta, January 22, 2018. REUTERS/Darrin Zammit Lupi

A man walks past the sundial on St Sebastian's Church in Qormi, Malta, January 22, 2018. REUTERS/Darrin Zammit Lupi

A woman walks past the sundial on St Sebastian's Church in Qormi, Malta, January 22, 2018. REUTERS/Darrin Zammit Lupi

A sundial is seen in the garden of the Chateau de Menars, France November 6, 2017. The Chateau de Menars, home of French King Louis XV's mistress Madame de Pompadour (1721-1764) and muse of the current owner, Monacan businessman and art lover Edmond Baysari who bought it in 1983 and renovated it for more than 100 million dollars. After more than two decades of work to restore it to its former glory the “Chateau Pompadour de Menars” is now for sale. Picture taken November 6, 2017 REUTERS/Gonzalo Fuentes

The Heliodome, a bioclimatic solar house is seen in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

The Heliodome, a bioclimatic solar house is seen in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

The Heliodome, a bioclimatic solar house is seen in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

French cabinet maker and designer Eric Wasser looks at his Heliodome, a bioclimatic solar house, in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house resembles a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

An interior view of a room inside of the Heliodome, a bioclimatic solar house, is pictured in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011.The house is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

French cabinet maker and designer Eric Wasser poses in front of his Heliodome, a bioclimatic solar house, in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house resembles a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

An interior view of a room inside of the Heliodome, a bioclimatic solar house, is pictured in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011.The house is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

Visitors look at the Heliodome, a bioclimatic solar house build in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

The Heliodome, a bioclimatic solar house is seen in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house is designed as a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

French cabinet maker and designer Eric Wasser poses in front of his Heliodome, a bioclimatic solar house, in Cosswiller in the Alsacian countryside near Strasbourg, Eastern France, August 4, 2011. The house resembles a giant three-dimensional sundial, set on a fixed angle in relationship to the sun's movements to provide shade during the summer months, keeping the inside temperature cool, and during Fall, Winter and Spring sunlight enters the large windows as the sun's position is lower in the sky, thus warming the living space. REUTERS/Vincent Kessler (FRANCE - Tags: ENERGY ENVIRONMENT SOCIETY)

Tourists rest near the Andesite Sun, an ancient sundial inside Sarmizegetusa Regia, the former capital of Dacia prior to the year 102 and 106 wars with the Roman empire, now a tourist site in the Orastie mountains, 381 km (237 miles) northwest of Bucharest, August 1, 2011. Sarmizegetusa was the most important political, religious and military center of Dacians, the former inhabitants of Romania, being the core of six fortresses forming a strategic defensive system. REUTERS/Radu Sigheti (ROMANIA - Tags: SOCIETY TRAVEL)

Tourists touch the Intihuatana solar clock in the Inca citadel of Machu Picchu in Cuzco as part of a belief that they will receive good energies from it December 2, 2010. Peru will celebrate on July 2011, the first centenary of the discovery of Machu Picchu with a huge exhibition after an agreement with Yale University to return thousands of artifacts taken from the archaeological site in the early 1900s, the Ministry of Culture said on Thursday. REUTERS/Enrique Castro-Mendivil (PERU - Tags: SOCIETY TRAVEL)

A sundial with an adage which reads: "Make it like a sundial, only count the cheery hours", is pictured at a house of the Odenwaldschule complex in Ober Hambach near Heppenheim March 7, 2010. Officials in the German state of Hesse started questioning at the Odenwald boarding school in an investigation into child abuse of former pupils. REUTERS/Ralph Orlowski (GERMANY - Tags: CRIME LAW EDUCATION)

The Intihuatana solar clock is seen with a puppet that represents an Inca in a replica of the Inca citadel of Machu Picchu made of chocolate at a hotel in Lima December 16, 2008. Peruvian chef Edwin Solis used 160 kilos of belgium chocolate for the replica that took 45 days to make. REUTERS/Pilar Olivares (PERU)

Canadian Prime Minister Stephen Harper (L) and Anita Gupta (R), a family member of a victim of Air India Flight 182, lay a wreath at a sundial during a ceremony to unveil a memorial, at the Toronto waterfront June 23, 2007. REUTERS/J.P. Moczulski (CANADA)

Security officers walk past "Putter Boy", the symbolic sundial sculpture of Pinehurst as players began practice rounds for the 105th U.S. Open in Pinehurst, North Carolina June 13, 2005. The tournament begins at the historic Pinehurst Number two course on Thursday. REUTERS/Rick Wilking JLS/NL

Two views of a sundial called the MarsDial can be seen in this image taken on Mars by the Mars Exploration Rover Spirit's panoramic camera. Scientists use the sundial to adjust the rovers' panoramic cameras, while students participating in NASA's Red Rover Goes to Mars program will monitor the dial to track time on Mars. Students worldwide will also have the opportunity to build their own Earth sundial and compare it to that on Mars.The left image was captured near martian noon when the Sun was very high in the sky. The right image was acquired later in the afternoon when the Sun was lower in sky, casting longer shadows. The colored blocks in the corners of the sundial are used to fine-tune the panoramic camera's sense of color. The sundial is embellished with artwork from children, and displays the word Mars in 17 different languages.The picture was released by the Jet Propulsion Laboratory in Pasadena, California Janaury 8, 2004.

NORTH KOREAN CHIEF DELEGATE PAK AND SOUTH KOREAN COUNTERPART YOON LOOK
AT A TRADITIONAL SUNDIAL IN SEOUL.

A Chinese worker, riding on a helium balloon, flies up to the top of
the projecting pointer of a giant sundial at Beijing's Millennium
Monument to install laser lighting July 10, 2001. Beijing's government
is preparing an extravaganza on Friday night for tens of thousands of
residents to watch the voting of the International Olympic Committee
(IOC) for the host city of the 2008 Olympic Games. Beijing is
considered as a frontrunner to win the vote.

ASW/CP

Chinese construction workers carry a huge piece of glass under the projecting pointer of a giant sundial which is part of the new China Century Monument in west Beijing December 15. The first of the two phases of construction work is expected to be finished later this month for the millennium celebrations which will be attended by [President Jiang Zemin.] The 4.5-hectare complex including exhibition halls, shopping malls, entertainment centres and car parks, will cost 200 million yuan ( $24 million). The design of the monument is based on the Temple of Heaven which was used by Chinese emperors to perform major ceremonial rites.
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CHINESE WORKERS CARRY A HUGE PIECE OF GLASS UNDER THE PROJECTING POINTER OF A GIANT SUNDIAL ON THE CENTURY MONUMENT IN BEIJING.


Chinese construction workers carry a huge piece of glass under the projecting pointer of a giant sundial which is part of the new China Century Monument in west Beijing December 15. The first of the two phases of construction work is expected to be finished later this month for the millennium celebrations which will be attended by President Jiang Zemin. The 4.5-hectare complex including exhibition halls, shopping malls, entertainment centres and car parks, will cost 200 million yuan ( $24 million). The design of the monument is based on the Temple of Heaven which was used by Chinese emperors to perform major ceremonial rites.

Chinese construction workers work on a giant sundial which is part of the new China Century Monument in west Beijing December 12. The first of the two phases of construction work is expected to be finished later this month for the millennium celebrations in the Chinese capital. The 4.5-hectare complex including exhibition halls, shopping malls, entertainment centres and car parks, will cost 200 million yuan ( $24 million). The design of the monument is based on the Temple of Heaven which was used by Chinese emperors to perform major ceremonial rites.
**DIGITAL IMAGE**

Chinese construction workers work under the projecting pointer of a giant sundial which is part of the new China Century Monument in west Beijing December 12. The first of the two phases of construction work is expected to be finished this month for the millennium celebrations in the Chinese capital. The 4.5-hectare complex, including exhibition halls, shopping malls, entertainment centres and car parks, will cost 200 million yuan ( $24 million). The design of the monument is based on the Temple of Heaven which was used by Chinese emperors to perform major ceremonial rites.

ASW/PB

Chinese construction workers work on a giant sundial which is part of the new China Century Monument in west Beijing December 12. The first of the two phases of construction work is expected to be finished later this month for the millennium celebrations in the Chinese capital. The 4.5-hectare complex including exhibition halls, shopping malls, entertainment centres and car parks, will cost 200 million yuan ( $24 million). The design of the monument is based on the Temple of Heaven which was used by Chinese emperors to perform major ceremonial rites.

ASW/PB