Hemispherical Sundial

The sundial called Angbuilgu (literally, 'sundial in the shape of upturned cauldron') was first made in 1434 when Joseon was under the King Sejong’s reign and is designed to indicate local apparent solar time and the twenty-four solar terms. The particular item in the precincts of Changgyeonggung Palace is a replica of the original now designated as the Treasure No. 845.