The International Date Line (IDL) is an imaginary line of navigation on the surface of the 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 the 180 meridian exactly. In other places, however, the IDL deviates east or west away from that meridian. These various deviations generally accommodate the political and/or economic affiliations of the affected areas.

Proceeding from north to south, the first deviation of the IDL from 180 is to pass to the east of Wrangel Island and the Chukchi Peninsula, the easternmost part of Russian Siberia. (Wrangel Island lies directly on the meridian at 7132N 1800E, also noted as 7132N 1800W.) It then passes through the Bering Strait between the Diomede Islands at a distance of from each island at 1685837 W. It then bends considerably west of 180, passing west of St. Lawrence Island and St. Matthew Island.

Answer this series of questions:

1. what is the meridian longitude of the IDL?
2. what does IDL stand for?
3. can people see it?
4. what poles dose it run from
5. what does it mark?
6. does it run through a large body of water?
7. what one?
8. does it ever deviate course?
9. where is the first place that happens?
1. 180
2. The International Date Line
3. no
4. North Poleto South
5. one calendar day to the next
6. yes
7. Pacific Ocean
8. yes
9. east of Wrangel Island