Jantar Mantar Jaipur || Guided Tour | Detailed Explanation of all Astronomical Instruments

In the 3rd day of our Jaipur trip we visited to the most popular place of Jaipur Jantar Mantar. this video is proper guide to jantar mantar you will know working of all the instruments in jantar mantar by this video.

All instruments of Jantar Mantar explained in detail. The Jantar Mantar is a collection of nineteen architectural astronomical instruments built by the Rajput king Sawai Jai Singh II, and completed in 1734. This was built in 5 locations across the country but except the Jaipur all others areas the construction did not complete. The one in Jaipur is the only functional Jantar Mantar even after almost 300 years. It features the world's largest stone sundial, and is a UNESCO World Heritage site. It is located near City Palace and Hawa Mahal. The instruments allow the observation of astronomical positions with the naked eye. Jantar Mantar means 'calculating instrument'.

Best time to visit Jantar Mantar: The best time of the day to visit Jantar Mantar in Jaipur is noon. During mid-day, the Sun is vertically above and it is easy to understand the process of interpretation of the readings of each instrument.

Jantar Mantar Jaipur timings: Jantar Mantar in Jaipur remains open from 9:00 am to 4: 30 pm, on all seven days of the week. Generally, one can see the whole of Jantar Mantar in 30 to 45 minutes of time.

Jantar Mantar Jaipur entry fee: Jantar Mantar, Jaipur entry fee is INR 50/person for Indians and INR 200/per person for foreigners. The entry cost for Indian students is INR 15/person and that of International students is INR 25/person. Students get this discount on showing valid ID proof.

Jantar Mantar Jaipur light and sound show timings:

Oct – Feb: 6:30 pm onwards
Mar – Apr: 7:00 pm onwards
May – Sep: 7:30 pm onwards

1. Vrihat Smarat Yantra: The Huge Sundiala big sun dial in jantar mantar
Vrihat Smarat Yantra is a gigantic sundial, placed at the center of Jantar Mantar observatory. This is 27 m long and renowned as the tallest sundial in the World. The Samrat Yantra, translating to ‘supreme instrument’ is an equinoctial sundial and measures time up to the precision of two seconds.

The shadow of the triangular wall of the yantra, which is positioned in the north-south direction with an angle identical to the latitude of this location, travels equal distances in equal intervals of time, on the eastern and western quadrants. This movement is standardized to calculate and interpret the local time.
2. Laghu Smarat Yantra
a staircase in jantar mantar Popular as small Smarat Yantra, it is smaller in size and calculates time up to the accuracy of twenty seconds. The ramp of this sundial points towards the North Pole, hence Jaipur time can be easily calculated from the position of ramp’s shadow on the fine divisions of the carved scale. The shadow of the triangular wall of the yantra tells the local time.
3. Ram Yantra
a beam structure in jantar mantar
Ram Yantra measures elevation and azimuth of Sun and planets. The instrument comprises a pair of tube-shaped structures, open to the sky. Each structure has a pole of equal height at the center. Scales indicating angles of altitude and azimuth of extra-terrestrial bodies are inscribed inside the walls of these structures. Ram Yantra is only seen in Jantar Mantar of Jaipur and New Delhi.

4. Jaya Prakash Yantra
a bowl like structure in jantar mantar
This is another major attraction in Jantar Mantar of Jaipur. This yantra consists of two hemispherical bowls like sundials with graded marbel slabs. The inverted image of the sky falls on the slabs and the movement of the inverted shadows help to detect the elevation, azimuth, hour angles and exact position of heavenly bodies.

5. Chakra Yantra
two circles look like clocks in jantar mantar
The chakra yantra, Jantar Mantar, Jaipur is a ring instrument which calculates the co-ordinates and the hour angle of Sun. It consists of four semi-circular arcs, on which the gnomon throws a shadow, hence deducing the declination of the Sun four times in a day.

6. Digamsa
a beautiful staircase structure in jantar mantar
Another must see instrument of Jantar Mantar is Digamsa. It is a pillar in the middle of two concentric outer circles, which helps to predict the sunrise and sunset timings in a day.

7. Nadivalaya
a huge sun dial in the premises of jantar mantar
With a pair of circular plates, facing north and south, Nadivalaya represent the two hemispheres of Earth. The wall of the plates is inclined at such a gradient, that the instrument is always parallel to Earth’s equatorial plane.
8. Karnti Vritya
Jantar Mantar excursion in Jaipur is not complete if you skip Karnti Vritya. This is a special instrument, used to measure the solar sign of the Sun in the daytime.

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