sync problems with my old iPod

I have an older iPod. I physically sync it with my MacBook Calendar through iTunes because it is a version that is too old to automatically sync with iCloud. I have iCloud on my MacBook and the iCloud calendar shows up when I have it clicked. However, my iPod will only sync the appointments that are in the iCal calendar and will not sync with any of the iCloud calendar appointments. How do I get the iCal calendar to sync with iCloud calendar? This has to be done so that I can sync with my old iPod.