Meridian

n.
  1. Midday; noon.
  2. Hence: The highest point, as of success, prosperity, or the like; culmination.
  3. (Astron.) A great circle of the sphere passing through the poles of the heavens and the zenith of a given place. It is crossed by the sun at midday.
  4. (Geog.) A great circle on the surface of the earth, passing through the poles and any given place; also, the half of such a circle included between the poles.
    5. Calculated for the meridian of, or fitted to the meridian of, or adapted to the meridian of ,
    suited to the local circumstances, capabilities, or special requirements of.