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 71°32′N 180°0′E, also noted as 71°32′N 180°0′W.) It then passes through the Bering Strait between the Diomede Islands at a distance of from each island at 168°58′37″ W. It then bends considerably west of 180°, passing west of St. Lawrence Island and St. Matthew Island. QUESTIONS:

Q1:
1. What meridian longitute is attributed to the International Date Line?
2. What is the International Date Line's meridian longitude?
3. State the meridian longitude of the International Date Line?
Q2:
1. What is IDL short for?
2. What does IDL mean?
3. What is IDL an acronym for?
Q3:
1. Can people see the IDL?
2. Is the International Date Line visible to the naked eye?
3. Is the International Date Line something you can see for yourself?
Q4:
1. What poles does the International Date Line run from?
2. The IDL goes from which pole to which pole?
3. What two poles does the International Date Line run between?
Q5:
1. What is demarcated by the International Date Line?
2. What does the International Date Line mark for us?
3. What is denotated by the IDL?
Q6:
1. Does the International Date Line run through a large body of water?
2. Is a big body of water cut through by the IDL?
3. Does the IDL traverse thorugh a large amount of water?
Q7:
1. What body of water does the International Date Line run through?
2. Which water source has the International Date Line running through it?
3. What ocean does the IDL go through?
Q8:
1. Does the IDL ever deviate course?
2. Are there ever deviations in the path of the International Date Line?
3. Does the IDL deviate in its path from time to time?
Q9:
1. What is the first deviation of the IDL?
2. What is the first instance when the IDL deviates?
3. Where does the first deviation of the International Date Line occur?
