Jantar Mantar
Observatory

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Why
Jantar Mantar Observatory
in Jaipur is special

Although the site might look like a child's fancy playground with oversized toys, it's a serious collection of some 20 early 18th century astronomical measurement instruments.

Their purpose was to keep time, forecast eclipses, and track planets, stars, and constellations for scientists, agriculturists, and astrologists.

Jantar Mantar Observatory
tips & insights

History in brief

Maharaja Jai Singh II built the complex from 1727 to 1734. Similar ones were also constructed in Delhi and three other cities, but the one in Jaipur is the biggest and best preserved.

Most famous unit

The Samrat Yantra sundial soars 27 meters (90 feet). Its two-second accuracy was a remarkable feat in the early 1700s. However, this unit is a tad less accurate today. Over time, its weight shifted the ground beneath it, enough to slightly misalign the structure.

Other instruments

There is a set of smaller sundials (one for each Zodiac sign) as well as other astronomical devices of different shapes, sizes, and functions.

Name

The site's name loosely translates as "calculator" in English. Jantar = "instrument" and Mantar = "calculating".

Location in India

Jantar Mantar is on
the famous Golden Triangle tour route

to learn about it.

 

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