Now, consider {poH nI’}. It’s a duration, but it has no anchor. It’s a long time. So? When did it happen? We don’t know. It’s not deictic. It’s not a reference to a calendar or a clock. It’s a duration without an anchor. It is not a Time Stamp.
This isn't correct. We have seen wa' jaj used canonically exactly the way English one day is used. It is neither deictic nor fixed to an "anchor." It is exactly as vague as poH nI'. But it is used as a time expression.
You could use poH nI' as a time reference, but it
would probably require special context. For instance, if you were
talking about several periods of history, one of which was longer
than the others, you might say something like poH nI' chenpu'
tayqeq'a' The great civilization formed in the long
period. You might not know exactly when the long period was,
but you know it existed, and that's enough for a time expression.
-- SuStel http://trimboli.name