Yes, as it should be. Because most of the world uses the metric system. The only notable country that does not of course, is the US. But even NASA uses it since 1990, because of overlapping space programs. To avoid errors between the other countries who also contribute to shared missions.
Not sure why the US never got on board at the time many other countries standardized it. Today of course I can only imagine the change over would just be too expensive, signage, text books and education revamps, vehicle spedometers, etc.
Not sure what 471 meters has to do with the Kelvin scale, as that is a distance not a temperature. But even then, Kelvin and Celsius are both metric, so I guess I'd have to say -273.15C.