Lines of Longitude (West)

Longitude is a geographic coordinate that specifies the east-west position of a point on the Earth's surface. It is an angular measurement, usually expressed in degrees and denoted by the Greek letter lambda (λ). Points with the same longitude lie in lines running from the North Pole to the South Pole. By convention, one of these, the Prime Meridian, which passes through the Royal Observatory, Greenwich, England, was intended to establish the position of zero degrees longitude. The longitude of other places was to be measured as the angle east or west from the Prime Meridian, ranging from 0° at the Prime Meridian to +180° eastward and −180° westward. Specifically, it is the angle between a plane containing the Prime Meridian and a plane containing the North Pole, South Pole and the location in question. (This forms a right-handed coordinate system with the z axis (right hand thumb) pointing from the Earth's center toward the North Pole and the x axis (right hand index finger) extending from Earth's center through the equator at the Prime Meridian.)A location's north-south position along a meridian is given by its latitude, which is (not quite exactly) the angle between the local vertical and the plane of the Equator.

Longitude, Wikipedia

West Lines

 * 1) 1st meridian west
 * 2) 2nd meridian west
 * 3) 3rd meridian west
 * 4) 4th meridian west
 * 5) 5th meridian west
 * 6) 6th meridian west
 * 7) 7th meridian west
 * 8) 8th meridian west
 * 9) 9th meridian west
 * 10) 10th meridian west
 * 11) 11th meridian west
 * 12) 12th meridian west
 * 13) 13th meridian west
 * 14) 14th meridian west
 * 15) 15th meridian west
 * 16) 16th meridian west
 * 17) 17th meridian west
 * 18) 18th meridian west
 * 19) 19th meridian west
 * 20) 20th meridian west
 * 21) 21st meridian west
 * 22) 22nd meridian west
 * 23) 23rd meridian west
 * 24) 24th meridian west
 * 25) 25th meridian west
 * 26) 26th meridian west
 * 27) 27th meridian west
 * 28) 28th meridian west
 * 29) 29th meridian west
 * 30) 30th meridian west
 * 31) 31st meridian west
 * 32) 32nd meridian west
 * 33) 33rd meridian west
 * 34) 34th meridian west
 * 35) 35th meridian west
 * 36) 36th meridian west
 * 37) 37th meridian west
 * 38) 38th meridian west
 * 39) 39th meridian west
 * 40) 40th meridian west
 * 41) 41st meridian west
 * 42) 42nd meridian west
 * 43) 43rd meridian west
 * 44) 44th meridian west
 * 45) 45th meridian west
 * 46) 46th meridian west
 * 47) 47th meridian west
 * 48) 48th meridian west
 * 49) 49th meridian west
 * 50) 50th meridian west
 * 51) 51st meridian east
 * 52) 52nd meridian east
 * 53) 53rd meridian east
 * 54) 54th meridian east
 * 55) 55th meridian east
 * 56) 56th meridian east
 * 57) 57th meridian east
 * 58) 58th meridian east
 * 59) 59th meridian east
 * 60) 60th meridian east
 * 61) 61st meridian east
 * 62) 62nd meridian east
 * 63) 63rd meridian east
 * 64) 64th meridian east
 * 65) 65th meridian east
 * 66) 66th meridian east
 * 67) 67th meridian east
 * 68) 68th meridian east
 * 69) 69th meridian east
 * 70) 70th meridian east
 * 71) 71st meridian east
 * 72) 72nd meridian east
 * 73) 73rd meridian east
 * 74) 74th meridian east
 * 75) 75th meridian east
 * 76) 76th meridian east
 * 77) 77th meridian east
 * 78) 78th meridian east
 * 79) 79th meridian east
 * 80) 80th meridian east
 * 81) 81st meridian east
 * 82) 82nd meridian east
 * 83) 83rd meridian east
 * 84) 84th meridian east
 * 85) 85th meridian east
 * 86) 86th meridian east
 * 87) 87th meridian east
 * 88) 88th meridian east
 * 89) 89th meridian east
 * 90) 90th meridian east
 * 91) 91st meridian east
 * 92) 92nd meridian east
 * 93) 93rd meridian east
 * 94) 94th meridian east
 * 95) 95th meridian east
 * 96) 96th meridian east
 * 97) 97th meridian east
 * 98) 98th meridian east
 * 99) 99th meridian east
 * 100) 100th meridian east
 * 101) 101st meridian east
 * 102) 102nd meridian east
 * 103) 103rd meridian east
 * 104) 104th meridian east
 * 105) 105th meridian east
 * 106) 106th meridian east
 * 107) 107th meridian east
 * 108) 108th meridian east
 * 109) 109th meridian east
 * 110) 110th meridian east
 * 111) 111th meridian east
 * 112) 112th meridian east
 * 113) 113th meridian east
 * 114) 114th meridian east
 * 115) 115th meridian east
 * 116) 116th meridian east
 * 117) 117th meridian east
 * 118) 118th meridian east
 * 119) 119th meridian east
 * 120) 120th meridian east
 * 121) 121st meridian east
 * 122) 122nd meridian east
 * 123) 123rd meridian east
 * 124) 124th meridian east
 * 125) 125th meridian east
 * 126) 126th meridian east
 * 127) 127th meridian east
 * 128) 128th meridian east
 * 129) 129th meridian east
 * 130) 130th meridian east
 * 131) 131st meridian east
 * 132) 132nd meridian east
 * 133) 133rd meridian east
 * 134) 134th meridian east
 * 135) 135th meridian east
 * 136) 136th meridian east
 * 137) 137th meridian east
 * 138) 138th meridian east
 * 139) 139th meridian east
 * 140) 140th meridian east
 * 141) 141st meridian east
 * 142) 142nd meridian east
 * 143) 143rd meridian east
 * 144) 144th meridian east
 * 145) 145th meridian east
 * 146) 146th meridian east
 * 147) 147th meridian east
 * 148) 148th meridian east
 * 149) 149th meridian east
 * 150) 150th meridian east
 * 151) 151st meridian east
 * 152) 152nd meridian east
 * 153) 153rd meridian east
 * 154) 154th meridian east
 * 155) 155th meridian east
 * 156) 156th meridian east
 * 157) 157th meridian east
 * 158) 158th meridian east
 * 159) 159th meridian east
 * 160) 160th meridian east
 * 161) 161st meridian east
 * 162) 162nd meridian east
 * 163) 163rd meridian east
 * 164) 164th meridian east
 * 165) 165th meridian east
 * 166) 166th meridian east
 * 167) 167th meridian east
 * 168) 168th meridian east
 * 169) 169th meridian east
 * 170) 170th meridian east
 * 171) 171st meridian east
 * 172) 172nd meridian east
 * 173) 173rd meridian east
 * 174) 174th meridian east
 * 175) 175th meridian east
 * 176) 176th meridian east
 * 177) 177th meridian east
 * 178) 178th meridian east
 * 179) 179th meridian east
 * 180) 180th meridian east