Quote:In ultratight third, when the POV character's thoughts are not marked out from the narrative proper, this rule isn't applicable. Much of the apparent narration is then actually very lightly paraphrased thought, for which yesterday/tomorrow etc is appropriate.
If you think to use "ago"/"tomorrow"/"yesterday"/etc in the narrative voice, don't.
However, when you're that deep inside the character's mind, it's more usual to use first person, unless there's good reason not to, such as maintaining uncertainty about the characters survival.
Which names to use goes by the same criterion. Normally, characters are referred to by the names a polite stranger would call them, but in ultratight third the name the POV character thinks of them by is used, even if it's a relationship term. Eddings, for example, refers to one character as 'Aunt Pol' over several books, because the narration is so deeply inside her courtesy nephew's head. If the POV were any less tight, she'd be Polgara throughout.