The International Meridian Conference was a conference held in October 1884 in Washington, D.C., in the United States, to determine a prime meridian for international use. The conference was held at the request of U.S. President Chester A. Arthur. The subject to discuss was the choice of "a meridian to be employed as a common zero of longitude and standard of time reckoning throughout the world". It resulted in selection of the Greenwich Meridian as the international standard for zero degrees longitude. 

By the 1870s there was pressure both to establish a prime meridian for worldwide navigation purposes and to unify local times for railway timetables. The first International Geographical Congress, held in Antwerp in 1871, passed a motion in favour of the use of the Greenwich Meridian for (smaller scale) passage charts, suggesting that it should become mandatory within 15 years. In Britain, the Great Western Railway had standardised time by 1840 and in 1847 the "Railway Clearing Union" decreed that "GMT be adopted at all stations as soon as the General Post Office permitted it". The Post Office was by this time transmitting time signals from Greenwich by telegraph to most parts of the country to set the clocks. By January 1848, Bradshaw's railway guide showed the unified times and met with general approval, although legal disputes meant that it was not until 1890 that GMT was formally established across the UK. QUESTIONS:

Q1:
1. What conference is at the center of the article?
2. Which conference does the article discuss?
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Q2:
1. What was the year of the International Meridian Conference?
2. When was the International Meridian Conference held?
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Q3:
1. Where was the International Meridian Conference held?
2. What was the location of the International Meridian Conference?
3. 
Q4:
1. What was the purpose of the International Meridian Conference?
2. Why was the International Meridian Conference held?
3. 
Q5:
1. What was the subject of the International Meridian Conference?
2. What was discussed during the International Meridian Conference?
3. 
Q6:
1. Did anyone request the International Meridian Conference?
2. Did someone specifically ask for the International Meridian Conference to be held?
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Q7:
1. Who asked for the International Meridian Conference to be held?
2. Who requested that there be a International Meridian Conference?
3. 
Q8:
1. What was Chester A Arthur's title?
2. What position did Chester A Arthur hold when he requested the International Meridian Conference?
3. 
Q9:
1. What did the International Meridian Conference result in?
2. What came as a result of the International Meridian Conference?
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Q10:
1. During what period was there pressure to unify local times?
2. When did pressure start mounting to have a unified local time?
3. 
Q11:
1. What took place in Antwerp?
2. What was Antwerp the setting for?
3. 
Q12:
1. When was the first International Geographical Congress held in Antwerp?
2. In what year did the first International Geographical Congress take place in Antwerp?
3. 
