The World’s Largest Sundial
Time and its Measurements Week:

The Samrat Yantra in Jaipur, India is the largest sundial ever built. Its gnomon is 73 ft. tall, and its time-scale is marked off in intervals of two seconds. The sundial is part of the Jantar Mantar complex in Jaipur, India, one of five large astronomical observatories constructed out of stone by Jai Sing II between 1727 and 1734. The other instruments in the complex track various celestial bodies, and are used to determine the longest and shortest days of the year. More photos of Jantar Mantar:




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