I wonder why some people have this sense, I know dad didn't know anything before he passed away.
Sorry to pry, was his death a long drawn out one or something sudden?

If it was a drawn out one (like from cancer etc) did he perk up before the end? I've experienced over the years with those I've been with when they have passed, that they seem to perk up within 24-48 hours of their passing, I've seen some get funerals arranged and then pass during the night.