India - a place where contains almost all amazing instruments for both astronomy and astrology. In Jaipur, you will have a chance to see the world’s largest sundial named Vrihat Samrat Yantra one of the architectural astronomical instruments in Jantar Mantar’s collection.
The Largest Sundial: Astronomical Role
The “Samrat Yantra” means the "great king of instruments" is 88 feet (27 m) high which remains the largest sundial ever built.
The movement of its shadow to calculate and tell the Jaipur local time. 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.
The huge Samrat yantra at Jaipur is capable of measuring time to an accuracy of two seconds. That means there are fine markings on the scale that indicate two second time intervals. It’s worth for travelers who love astronomy to stand and watch its movement.
Furthermore, there is a small cupola on top of it, used in Hindu tradition to announce eclipses and for weather prediction. For example the arrival of monsoons.
Best time to visit Samrat Yantra
Because Samrat Yantra is one of the instruments in 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.
The Jaipur observatory is the largest and best preserved of these and has a set of some 20 main fixed instruments built in masonry. India was declared a UNESCO World Heritage Site in 2010 with the immense architectural, historical, and astronomical significance of the Jantar Mantar, home of the world’s largest sundial - Vrihat Samrat Yantra.
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