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
180 Degrees South: Conquerors of the Useless at a different purpose is the chill sound track." They expanded that it was not until after Johnson's unscheduled delay on Easter Island that viewers "first learn what 180° South is most obviously about," when "the theme of ecological conservation is played out in conversations about national parks, hydro-electric dams, indigenous wildlife, sustainable farming, consumerism, commercial fishing, reforestation and even development models." They note that the final two-thirds of the film shares the "intrinsic tension between conservation on the one hand and the mass-produced technological innovations that make the trip and film possible on the other". "The Washington Post" writes