
Ujjain, often referred to as the astronomical capital of India, has been an important center for science, astrology, and spirituality since ancient times. The Jantar Mantar or Vedh Shala of Ujjain is not only a historical site but also a remarkable achievement of Indian astronomy.
In ancient India, Ujjain was considered the base point for time calculation and calendar-making. The reason was its location on the Prime Meridian of India (Zero Longitude line). Just like Greenwich in London is taken as the global reference for time today, Ujjain was once known as the Greenwich of India.
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Even today, this observatory reminds us that centuries before the rise of modern science in the West, Indian scholars and astronomers were already mastering complex astronomical studies and time calculations.
History

The Jantar Mantar of Ujjain was built by Maharaja Sawai Jai Singh II of Jaipur (1688–1743). Apart from being a great ruler, Jai Singh was deeply interested in mathematics and astronomy.
During his time, inconsistencies in Panchang (Hindu calendar) and astronomical calculations had increased. Different scholars provided varying times for eclipses, seasons, and religious rituals, which often created confusion. To resolve this issue, Jai Singh decided to build observatories equipped with instruments that could measure planetary movements and time with precision.
He established five observatories across India at:
- Delhi
- Jaipur
- Varanasi
- Mathura
- Ujjain
Among these, the Ujjain observatory was considered the most significant because of the city’s historical role as the center of time calculation. The construction was completed around 1725 AD.
Jai Singh named it “Vedh Shala” since its purpose was to connect astronomical principles mentioned in the Vedas with practical observation and make them useful for society in determining calendars, eclipses, and ritual timings.
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Design of Jantar Mantar

The design of Jantar Mantar is based on scientific precision. The instruments here are made of stone and metal and are carefully placed in open space to capture direct sunlight.
- Each instrument is constructed in unique geometric shapes—circular, semi-circular, and angular.
- They work with the movement of the Sun, Moon, and planets.
- Every instrument was built to solve a particular astronomical problem.
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Purpose of Jantar Mantar
- To calculate accurate time
- To determine the position of planets and constellations
- To prepare Panchang (calendar)
- To predict solar and lunar eclipses
- To fix proper timing for agriculture, journeys, and religious rituals
Key Features
- It is one of the five major observatories built by Jai Singh II.
- The instruments still demonstrate astonishing accuracy even today.
- It is a symbol of India’s scientific and mathematical heritage.
- Ujjain’s Jantar Mantar served as the time reference point for centuries.
Major Instruments and Their Uses
- Samrat Yantra – Measures accurate time using the shadow of the Sun.
- Nadivalaya Yantra – Measures day and night time.
- Bhitti Yantra – Determines the position of the Sun and zodiac signs.
- Dakshinottar Yantra – Used to study the Sun’s movement during Uttarayan and Dakshinayan.
- Shanku Yantra – Measures the division of day into different parts.
- Ratnakar Yantra – Used to calculate the positions of stars and constellations.
- Chakra Yantra – Determines planetary positions and movements.
Opening and Closing Time
- Opening Time: 7:00 AM
- Closing Time: 7:00 PM
(Timings may vary due to seasons or administrative reasons.)
Entry Fee of Jantar Mantar Ujjain
The entry fee to visit Jantar Mantar in Ujjain is quite minimal, making it accessible for everyone. For Indian visitors, the entry fee is ₹40 per person, while for foreign tourists, it is ₹200 per person. Children below 15 years of age can visit for free.
Hotels Near Jantar Mantar Ujjain
If you are planning to stay near Jantar Mantar, there are several hotels and lodges available for a comfortable experience.
- Hotel Midland – A budget-friendly option with basic amenities and good connectivity.
- Hotel Kalpana Palace – Located close to the temple and observatory, offering standard rooms.
- Hotel Abika Elite – A modern stay option with spacious rooms, restaurant service, and comfortable facilities.
- Hotel Imperial Grand – A premium hotel for those looking for luxury, featuring fine dining and modern services.
Best Time to Visit
- The ideal months to visit are from October to March when the weather is pleasant.
- Morning and afternoon are the best hours to observe shadows and get clear readings from the instruments.
How to Reach?
- By Train: Ujjain Junction Railway Station is about 2.5 km away.
- By Air: The nearest airport is Indore (Devi Ahilya Bai Holkar Airport), about 55 km away.
- By Road: Ujjain is well-connected to major cities of Madhya Pradesh and India by road.
Full Address
Jantar Mantar (Vedh Shala), Vedh Shala Road, Jantar Mantar Marg, Ujjain, Madhya Pradesh – 456006
Nearby Attractions
- Mahakaleshwar Jyotirlinga Temple – One of the 12 Jyotirlingas of Lord Shiva.
- Kal Bhairav Temple – A mysterious and famous temple of Ujjain.
- Harsiddhi Mata Temple – One of the 51 Shakti Peethas.
- Ram Ghat – A sacred site on the banks of the Shipra River.
- Sandipani Ashram – The place where Lord Krishna and Balarama studied.
- Gopal Mandir – A beautiful temple dedicated to Lord Krishna.
Images of Jantar Mantar, Ujjain
Other tourist places near Jantar Mantar Ujjain
Shri Mahakaleshwar Jyotirlinga Temple
Shri Kaal Bhairav Mandir, Ujjain
Shree Harsiddhi Mata Shaktipeeth Temple
Maharishi Sandipani Ashram
Jai Maa Gadhkalika Mata Shakti Peeth Mandir Ujjain
Shree Chintaman Ganesh Temple, Ujjain
ISKCON Temple, Ujjain
Shri Dwarkadhish Gopal Mandir Ujjain
Mahakal Lok
Kaliyadeh Palace
Bhartrihari caves
Gopal Mandir
Navgrah Shani Mandir Ujjain
Ram Janardan Temple
Kalidas Academy
Mahakal Mahadev Mandir
Shri Chaubis Khamba Mata Temple, Ujjain
Ram Ghat Marg
Shree Bada Ganesh Mandir




