You make it sound like he deliberately set out to be vague.
His first contact with the authorities was on 4th May, when he reported 'rasta man', who entered the Tapas restaurant where Mr Wilkins was between 8.30 and 9 pm.
His second contact was 7th May, and he is now in the toilet near the bar; not only is he no longer in the restaurant, he can't see into it either. Amaral asked what time he saw Gerry, but the question isn't answered.
In November Op task are back for 'background information'. I don't know if the PJ requested this visit, but they were given the statement. He is now in the bar, which is where the toilet was, it seems (not 'near'?). On 4th May this happened between 8.30 and 9 pm, but he no longer remembers that.
Both the PJ and the McCanns asked what time he met Gerry in their rog. questions, but he would only say 8.45-9.15.
Quite possibly Mr Wilkins had no idea where he was or at what time so he's vague because of that. He does, however, say he went to his apartment after his chat with Gerry. He ate dinner, watched a DVD and was in bed at 11pm. His wife says that all began at around 9.30pm. If she's right he was speaking to Gerry shortly before that so it begs the question why he insists on a half hour possibility.
4th May
He told us that yesterday, between 8.30 and 9pm, while he was in the "TAPAS" restaurant, he noted that a person of around 1.70m, with long blond hair, apparently of the "Rasta," style and dressed in green military-style clothes, entered the restaurant.
http://www.mccannpjfiles.co.uk/PJ/JEREMY-WILKINS.htm 7th May
I was pushing the pram around the complex and went to the toilet near the bar. I could not see inside the restaurant.
http://www.mccannpjfiles.co.uk/PJ/JEREMY-WILKINS.htmNovember
He walked around the main area of the resort and eventually ended up in the Tapas bar where he used the toilet facility. He was unable to state what time this was.
http://www.mccannpjfiles.co.uk/PJ/JEREMY_BRIGET.htmRog
As stated in my original deposition, I believe that I left the apartment around 20h30. I calculate that I met Gerry on the road between 20h45 and 21h15. I am aware of the importance of this hour and am also aware that the media announced our meeting time as 21h05. Even if this were correct, I have no idea from where such information originated. It is not possible to give you a more exact time.
http://www.mccannpjfiles.co.uk/PJ/JEREMY-WILKINS-ROGATORY.htm