Why the name now?

Three weeks after huge earthquake at last the name is fixed by the Government as "East Japan Earthquake",too late no?
This kind of decision takes time as long as 21 days interval?
Very primitive and being just a layman in every field as the Current Administration of Japan now, we must recommend the US saying that Japanese Government rejected the US helpful proposal at the very beginning of the affair because US had realized what kind of phenomena had occurred and the necessity of the early response on destructed Nuclear Electric Power Plants, they are always watching all over the world from satellite.