Situation: I am sitting on a chair under the window facing the chair at the corner of the table with two other chairs on my right.
Alternative situations: I sat against the wall in a chair and there were a couple of chairs to my right. Waiting for my boss to end his speech, I am sitting my back to the window, while there are two more coworkers sitting on my right and the chair on my left is empty.
Question: Which way should my head turn to look at the blackboard?