While Bell is explaining to Dr Wallace about the wall display, saying a patient could "visit" Machu Picchu or be present on the Moon during "Earthrise", in fact, there is no such thing as "Earthrise" on the Moon, as the satellite is tidally locked facing Earth in the same position (except for imperceptible wobbles). A person on the surface of the Moon would only see the Earth occupy the exact same position all the time, day or night. What would be visible is the terminator passing across the face of the Earth, allowing an observer to actually tell what time it was. Since Bell is the titular "Pure Genius", you would think he would know such a thing.