I am creating 20 km raster cells around earthquake points in arc desktop 10.1. Using a conic projection, I would like the cells to cells to line up with true north rather than the edges of my layout. Is there a way to do this? I tried creating the rasters in a different projection (create in wgs84 and project in albers equal area conic did the trick, but with the wrong size) but have found no solutions yet for rotating individual rasters around their centroid.