Question: Who is recognized as a hero for his actions in the aftermath of a megathrust earthquake off the coast of Japan that occurred at 14:46 JST (05:46 UTC) on Friday 11 March 2011?
Sentence (from "1946 Nankai earthquake"): It occurred on December 21, 1946, at 04:19 JST (December 20, 19:19 UTC).
Relevant evidence: No