18th meridian west, a line of longitude west of the Greenwich Meridian
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18th meridian east, a line of longitude east of the Greenwich Meridian
18th United States Congress | Meridian | Meridian, Mississippi | meridian | ITV Meridian | 97th meridian west | Blood Meridian | 18th parallel south | 144th meridian east | 114th meridian west | Meridian (geography) | Edward Plunkett, 18th Baron of Dunsany | 57th meridian west | 125th meridian west | 105th meridian west | 104th meridian west | Irish Volunteers (18th century) | 6th meridian east | 153rd meridian east | 115th meridian west | 105th meridian east | 103rd meridian west | Meridian, Texas | Meridian (journal) | Meridian International Center | John Forbes-Sempill, 18th Lord Sempill | Conor Myles John O'Brien, 18th Baron Inchiquin | Blood Meridian (band) | 87th meridian west | 86th meridian west |