The sundial works by casting the shadow of the gnomon (a reflection of the celestial north-south meridian) on the two quadrants (a reflection of the equatorial plane) hour by hour, minute by minute.

It houses a huge collection of astronomical instruments and the world’s biggest sundial. Jantar Mantar is a UNESCO World Heritage site and is a must-visit for all history lovers. ALSO SEE 11 ...

In Delhi, another Jantar Mantar shares the legacy of its Jaipur counterpart. This observatory, though smaller, features the ...

It houses the world’s largest stone sundial and is a UNESCO World Heritage site. Jantar Mantar houses 19 fixed instruments made of stone and brass—all astronomically functional. Its purpose ...