During the cliffhanger of Episode Two ("The Ghosts") the interior of the capsule is still streaked with dirt and clay. When this scene is reprised at the start of Episode Three ("Imps and Demons") the capsule is completely clean, even though no time is supposed to have elapsed.
Calendars seen on sets throughout the serial always show the episode's actual live transmission date. Whilst providing a uniquely contemporary feel for BBC viewers of the original 1958/9 screenings, it make no sense within the internal narrative.