| LONGITUDE | The distance in degrees East or West of the prime meridian at zero degrees (9) |
| MEANTIME | Greenwich - -; the annual average of hours, minutes and seconds when the sun crosses the prime meridian at the Royal Observatory (4,4) |
| GREENWICH | Location of the prime meridian in the UK |
| GUARDSMAN | Soldier a degree east of Ulster peninsula caught by rifle, say? (9) |
| SCRAPYARD | Fight's taken the distance in recycling centre |
| RHUMBLINE | Path cutting meridians at same angle |
| ACCRA | Capital just west of the prime meridian |
| INTERVAL | Meaning "space between ramparts", a break between acts of a play or sessions in cricket; or, the distance in pitch of notes (8) |
| AIRY | George Biddell ___, English Astronomer Royal (1835-1881) who established Greenwich as the location of the prime meridian in 1851 (4) |
| LATITUDE | Angular distance in degrees north or south of the equator (8) |
| EQUATOR | The great circle of the earth at zero degrees latitude (7) |
| SEMITONE | In music, the distance in pitch between a note and its nearest neighbour on the piano keyboard (8) |
| DIEPPE | Fade very quietly, east or west of Ellesmere Port |
| SIDE | East or West of New York |
| ATMOSPHERE | A unit of pressure equivalent to the pressure that will support a column of mercury 760mm high at 0 degrees Celsius at sea level |
| ATARMSLENGTH | At the distance in which each party preserves its independence (2,4,6) |
| RHUMB | Imaginary line on the earth's surface cutting all meridians at the same angle (5) |
| BREADTHS | The distances in swimming pools from one side to the other (8) |
| NORTH | Compass point at 0 degrees or 360 degrees (5) |
| GMT | Setting at the prime meridian, for short |
