How does interstellar portray time dilation?

The excerpt from Wikipedia focuses on the film’s production background, cast, and general plot premise, describing it as an epic science‑fiction story set in a dystopian future where astronauts travel through space to find a new home for humanity. It does not mention any specific depiction of time dilation or related scientific concepts within the narrative or visual presentation. Consequently, based on the verified evidence given, there is no information available to explain how Interstellar portrays time dilation.