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On September 28, 1850, the United States adopted two primary meridians of longitude for officially use: the Greenwich Meridian (through the old Royal Observatory at Greenwich, England) for all nautical and international use, and the Washington Meridian (through the old United States Naval Observatory in Washington, D.C.) for more accurate astronomical and domestic use.
25th meridian west from Washington, a line of longitude west of the Washington Meridian
32nd meridian west from Washington, a line of longitude west of the Washington Meridian