In Oqia, any vision he had he knew would happen at a certain time and in a certain place. But strangely, something had been getting in the way of his spying on the future as he traveled by sea.
Earlier, he had seen a dark night when a strange ship, apparently abandoned, would come into the path of his people. But he couldn't say when exactly it would happen. It could be 10 days after his vision, or 50. All he could say about the date of when it would happen was that it would be on the fourth night of the deep darkness of their voyage.
As for the location, as the sea on its surface was one continuous whole, with no reliefs, vegetation or visual signs to differentiate it, he did not know where it would happen.