Corrected entry: When House gets called back into work by Cameron it is almost midnight, as stated by Cameron. House then goes up on the roof, where the sun is shown either setting or rising. He then goes back down to his team and checks his watch to note when midnight occurs and Foreman's four weeks in charge are over. This episode takes place in the days directly following last week's episode, which was set during winter (complete with a heavy snowstorm). In winter the sun neither sets nor rises around midnight.