International Meridian Conference

International Meridian Conference
The vertical red line left of the middle is the Greenwich meridian.
Host country	United States
Date	1 October 1884 (1884-10-01)[1]
Cities	Washington, D.C.
Chair	C. R. P. Rodgers[1]
Key points
Establishment of Universal Time Agreement of the Greenwich meridian as the international standard for 0° longitude

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.^[1] The conference was held at the request of U.S. President Chester A. Arthur.^[1] 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".^[1] It resulted in the recommendation of the Greenwich Meridian as the international standard for zero degrees longitude.^[1]