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A Jantar Mantar is an assembly of stone-built astronomical instruments, designed to be used with the naked eye. There were five Jantar Mantars in India, all of them built at the command of the Rajah Jai Singh II, who had a keen interest in mathematics, architecture and astronomy; The largest example is the equinoctial sundial belonging to Jaipur's assembly of instruments, consisting of a gigantic triangular gnomon with the hypotenuse parallel to the Earth's axis. On either side of the gnomon is a quadrant of a circle, parallel to the plane of the equator. The instrument can be used with an accuracy of about 2 seconds by a "skilled observer" to measure the time of day, and the declination of the Sun and the other heavenly bodies. It is the world's largest stone sundial, known as the Vrihat Samrat Yantra. The Jaipur Jantar Mantar is a UNESCO World Heritage Site.
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Section 144 imposed in Delhi, security beefed up at borders as farmers head to Jantar Mantar for 'Mahapanchayat'Section 144 has been imposed across the national capital while heavy security arrangement has been deployed at Jantar Mantar.
SKM Mahanchayat called at Delhi's Jantar Mantar today, farmers demand justice for Lakhimpur families, MSP guaranteeThe Mahapanchayat has been called to demand justice for the victim families of Lakhimpur Kheri and a law to ensure MSP guarantee.
'Cemented barricades, heavy police force': Delhi Police tightens security ahead of farmers protest at Jantar MantarAhead of a farmers' protest in Delhi on Monday, Delhi Police tightened the security in the national capital.
Rakesh Tikait detained by Delhi Police on way to Jantar Mantar protest
Priyanka Gandhi stages sit-in over price rise outside Congress HQ; detained by policeDressed in black, as several other party members did to register their protest against the government, Priyanka Gandhi crossed the police barricades put up on the road outside the party headquarters..
PM Modi's brother Prahlad Modi stages dharna at Jantar Mantar, know reason whyPrahlad Modi, who is the brother of PM Narendra Modi, is currently staging a protest at Jantar Mantar in New Delhi over the demands of shop dealers.
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Udaipur tailor killing: Bajrang Dal members protesting at Jantar Mantar against murder detainedThe officials said the Vishwa Hindu Parishad did not have prior police permission to hold the protest.
Congress to stage 'Satyagrah' at Jantar Mantar today, Delhi Police allows only 1,000 protestersCongress leaders and parliamentarians will hold 'Satyagrah' for the second day at Jantar Mantar against Agnipath scheme in solidarity with the youth.
'ED running glow and lovely scheme': Congress on ED questioning Rahul GandhiThe Congress said it will continue its Satyagraha at Jantar Mantar against the ED action and also Agnipath.
Congress holds 'Satyagraha' at Delhi's Jantar Mantar in support of Agnipath protestsCongress leaders and supporters criticised the BJP-led central government and said that the Agnipath scheme is not beneficial for the country's youth and also jeopardises national security.
Aspirants plough training track they toiled to build 5 years agoNow hundreds of these youths plan to travel to Delhi to protest at Jantar Mantar on June 19. “We ran with vigour all these years, hoping to be recruited one day. This scheme has completely ruined us..
Agnipath scheme: Youth Congress workers stage protest near Jantar Mantar in DelhiSix individuals were arrested, according to police, for holding rallies without authorisation.
Students evacuated from Ukraine hold protests in Delhi, seek admission to Indian medical collegesStudents who were evacuated from Ukraine, along with their parents, held protests at Jantar Mantar, wanting to complete their studies.
Suspended MPs plan to take their protest to Jantar Mantar
Can’t be in court & also go on blocking roads: SC to farmersA farmer group’s plea for permission to hold protest against the three new agricultural laws at Jantar Mantar near Parliament triggered a volley of questions Friday from the Supreme Court. It asked..
To support farmers, Rahul-led oppn joins stir at Jantar Mantar
Congress ally JMM skips, AAP makes surprise entry in Rahul Gandhi-led meeting of 15 opposition partiesHosted by Congress, 15 opposition parties met on Friday for the second time this week to chalk out a common strategy for the ongoing Monsoon Session of Parliament. Leaders of the 15 political parties..
End protest and come for talks: Tomar to agitating farmers at Jantar Mantar
Will hold our own Parliament sessions at Jantar Mantar: Rakesh Tikait ahead of protest
Farmers to hold 'Kisan Sansad' at Jantar Mantar from July 22: Key pointsThe DDMA has allowed a maximum of 200 protesters bearing identity cards at Jantar Mantar each day between 11am and 5pm. Samyukt Kisan Morcha(SKM), the umbrella organisation of farmers’ bodies, said..
Shashi Tharoor joins protesting MP's at Jantar Mantar, says Govt failed nation and farmers
Centre’s imposing ‘economic blockades’ on Punjab: Navjot Sidhu at Jantar Mantar