A calendar may hang crooked when the hanger length is wrong, the hanger is not centered, the wire is closed unevenly, or the punch pattern sits too far from the intended top edge. Heavy cover stock or uneven artwork inserts can also shift balance. Before production, create one finished sample with the same paper, cover, wire, and hanger planned for the full run. Hang it from a hook and check whether it sits level, turns smoothly, and keeps the hanger seated in the wire. If it leans, adjust the hanger size, wire diameter, or punch position before binding more units. Testing one sample can prevent a full batch from looking uneven.