I am trying to layerstack several landsat 8 bands (all of which are mosaicked landsat bands). Each band is projected the same (UTM WGS84 21N) and I choose the layerstck parameters to match. However, the result repeatedly comes out to be zone 21S. I am trying to preserve data values, so reprojecting back into zone 21N is not a good option. I cannot determine why it would be changing, nor why choosing the correct zone will not assure the result will be projected accurately. I have tried ENVI and tif output among other things. Has anyone else faced this and been able to prevent it?