Samrat Yantra

E306141

Samrat Yantra is a massive stone sundial at Jaipur’s Jantar Mantar observatory, renowned for its precise astronomical timekeeping.

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All labels observed (3)

Statements (46)

Predicate Object
instanceOf astronomical instrument
heritage monument
sundial
approximateCompletionYear 1734
associatedObservatoryNetwork Jantar Mantars built in Delhi, Ujjain, Varanasi, and Mathura
associatedWith Maharaja Sawai Jai Singh II’s program of astronomical reform
category architectural astronomy
historical observatory instrument
constructedBy Maharaja Jai Singh II
surface form: Maharaja Sawai Jai Singh II
constructedFor astronomical observations
calendar calculations
timekeeping
constructionStartCentury 18th century
culturalSignificance symbol of India’s pre-modern scientific heritage
dialType equinoctial sundial
etymology Samrat Yantra self-linksurface differs
surface form: ‘Samrat Yantra’ means ‘Supreme Instrument’ in Hindi/Sanskrit
function aids in determining celestial coordinates
measures declination of the Sun
measures local solar time
gnomonOrientation aligned with Earth’s rotational axis
governingBody Archaeological Survey of India
hasFeature quadrants with graduated scales
stairway along the hypotenuse of the gnomon
height about 27 meters
heritageStatus Jantar Mantar, Jaipur
surface form: UNESCO World Heritage Site (as part of Jantar Mantar, Jaipur)
latitudeAlignment aligned to latitude of Jaipur
locatedIn Jantar Mantar, Jaipur
locatedInCity Jaipur
locatedInCountry India
locatedInState Rajasthan
material marble
stone
measurementUnit local time in hours, minutes, and seconds (via scale readings)
notableFor high precision in solar time measurement
integration of architecture and astronomy
massive scale compared to typical sundials
orientation north-south aligned gnomon
partOf Jantar Mantar, Jaipur
surface form: Jantar Mantar observatory, Jaipur
preservationStatus protected monument
relatedWork other yantras at Jantar Mantar, Jaipur
shape triangular gnomon with quadrants on either side
timeAccuracy about 2 seconds
tourismAttraction major tourist attraction in Jaipur
usedFor astrology-related calculations in historical context
calibrating other instruments at Jantar Mantar
visitorAccess open to public

Referenced by (6)

Full triples — surface form annotated when it differs from this entity's canonical label.

Jantar Mantar, Jaipur hasSundial Samrat Yantra
Misra Yantra relatedTo Samrat Yantra
Rashivalaya Yantras relatedTo Samrat Yantra
Rashivalaya Yantras calibrationReference Samrat Yantra
this entity surface form: Samrat Yantra at Jantar Mantar, Jaipur
Samrat Yantra etymology Samrat Yantra self-linksurface differs
this entity surface form: ‘Samrat Yantra’ means ‘Supreme Instrument’ in Hindi/Sanskrit
Digamsa Yantra relatedTo Samrat Yantra