HNP [HUANENG POWER INTERNATIONAL] 6-K: This Form 6-K consists of: DATE OF MEETING
[This Form 6-K consists of: DATE OF MEETING OF THE BOARD OF DIRECTORS The board of directors (the "Board") of Huaneng Power International, Inc. (the "Company") announced that a meeting of the Board of the Company will be convened on Tuesday, 24 April 2012, for the purposes of considering and approving the publication of the results announcement of the Company]