20/20 to devote tonight’s show to Japan; Dateline updating situation

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ABC News, after getting some flack for not updating the West coast edition of “Nightline” to cover the earthquake in Japan, will devote all of tonight’s “20/20″ to the quake and tsunami, TVNewser has learned. The show airs at 10pmET/PT. NBC News tells us “Dateline” will cover the latest on the earthquake, with anchor Kate Snow providing live updates during a two-hour “Dateline” beginning at 9pmET/PT.

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