darkweasel:

Hyperboreus:
Exactely, the n-ending after prepositions only makes sense with spatial/temporal prepositions.

When does it make sense with temporal prepositions?

Maybe one example:

"Ni prokrastu la decidon post la sekvaN kunsidoN."

Actually I would say: "... al post la sekva kunsido." I am not really sure, whether both are correct.

Johannes