Using python I want to convert coordinates from one spatial reference system to another. I usually use the osgeo library for this which works very well. I have however come to the situation that I need to convert to a UTM zone further away from the equator (say UTM zone 29U for example). For this zone I can not find an EPSG code on spatialreference.org.
Why is it that I can only find codes for zone either north or south of the equator (29N and 29S)?