 PLOT: The citys calendar is apparently based on astrological signs  rather than the standard months we use today. The film takes place  during the "month" of Capricorn, which is during December and  January of a standard year, when it would be bitterly cold outdoors  in the Washington DC area. However, the outdoor weather in the film  is obviously very mild. (It is possible, however, that the  astrological "months" are used during different times of year, or  that some type of massive catastrophe occurred that changed the  climate.)