Ram Yantra - The Cylindrical Instrument at Jantar Mantar, Delhi

Delhi, DelhiHERITAGE SITE

A pair of large cylindrical astronomical instruments at Delhi's Jantar Mantar, used for measuring the altitude and azimuth of celestial bodies.

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HERITAGE SITE

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1-2 hours

Accessibility

Not Wheelchair Friendly

Parking

No Parking

Photography

No Photography

About the Destination

Overview

The Ram Yantra is a key instrument within Delhi's Jantar Mantar observatory complex. It consists of two large, complementary cylindrical structures, both open to the sky. Each structure has a central pillar, or gnomon, of the same height as its walls. The floor and the inside of the walls are marked with calibrated scales. Visitors can walk inside these structures and observe the intricate design firsthand. The purpose of the Ram Yantra was to measure the altitude (the angle above the horizon) and the azimuth (the horizontal angle from a cardinal direction) of celestial objects like the sun, moon, and stars.

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Location & Address

Sansad Marg, Connaught Place, New Delhi, Delhi 110001, Connaught Place, Delhi, Delhi, India

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Best Time to Visit

The best time to visit is from October to March when the weather in Delhi is cool and pleasant, with average temperatures between 10°C and 25°C. This period offers clear skies, which is ideal for understanding the sun's role in the observatory's function. Avoid the peak summer months of May and June due to extreme heat (often above 40°C). The monsoon season from July to September can bring heavy rain and high humidity, making an outdoor visit uncomfortable.
Peak Crowd: November to January, especially on weekends and public holidays, due to pleasant weather and peak tourist season.
Moderate Crowd: February, March, October, and on weekdays.
Low Crowd: April to June due to extreme summer heat, and July to September during the monsoon season.

How to Reach

Air

Indira Gandhi International Airport (DEL) is the nearest airport, located about 15 km away. It takes approximately 30-45 minutes to reach by taxi or airport metro express.

Train

New Delhi Railway Station (NDLS) is the closest major station, just 2 km away. Old Delhi Railway Station (DLI) is about 5 km away. Both are well-connected to auto-rickshaws and cabs.

Road

Jantar Mantar is located on Sansad Marg in Central Delhi and is easily accessible by road from all parts of the city and surrounding NCR region via the Outer and Inner Ring Roads.

Local Transport

The best way to reach is via the Delhi Metro; get down at Patel Chowk or Janpath station. DTC buses, auto-rickshaws, and app-based ride-hailing services like Ola and Uber provide excellent connectivity.