Latitude exact relationship of parallels and meridians with horizontal and vertical: both are complicated curves. On the sphere the normal passes through the centre and the latitude () is therefore equal to the angle subtended at the centre by the meridian arc from the equator to the point concerned. If the meridian distance is denoted by then where denotes the mean radius of the Earth. is equal to . No higher accuracy is appropriate for since higher-precision results necessitate an ellipsoid model. With this value for the meridian length of 1 degree of latitude on the sphere is (60.0 nautical miles).
Latitude Festival Women were advised against going anywhere on site unaccompanied. Latitude 2011 (the sixth edition) took place on 14–17 July 2011. The first line up announcements were revealed on 14 March 2011. The three Obelisk headliners were revealed as well as a number of other artists and acts appearing across all stages. Latitude 2012 (the seventh edition) took place on 12–15 July 2012. The first line up announcements were revealed on 5 March 2012. The three Obelisk headliners were revealed alongside the three Word Arena headliners, as well as a number of other artists and acts appearing across all stages. What