International Date Line International Date Line The International Date Line (IDL) is an imaginary line of demarcation on the surface of Earth that runs from the North Pole to the South Pole and demarcates the change of one calendar day to the next. It passes through the middle of the Pacific Ocean, roughly following the 180° line of longitude but deviating to pass around some territories and island groups. The IDL is roughly based on the meridian of 180° longitude, roughly down the middle of the Pacific Ocean, and halfway around the world from the Greenwich meridian. In many places, the IDL follows
West Tripura district West Tripura district West Tripura is an administrative district in the state of Tripura in India. The district headquarters are located at Agartala. As of 2012 it is the most populous district of Tripura (out of 8). While Tripura as a whole lies approximately between the north latitude 22 degrees 56' and 24 degrees 32' and between longitude 91 degrees 0' and 92 degrees 20' east, the West Tripura district lies approximately between latitude 23 degrees 16' to 24 degrees 14' north and longitude 91 degrees 09' east to 91 degrees 47' east. The West Tripura District is bounded by