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KYOTO, Japan (CBS/RTV/TV OSAKA) -- Japan's Jiroemon Kimura becomes the world's oldest person after U.S. woman passes away.

STORY: Jiroemon Kimura, already the world's oldest man as recognized by an international body, is now the world's oldest person after Dina Manfredini of Johnston, Iowa died on Monday (December 17) in her nursing home at the age of 115.

Kimura is only 15 days younger than Manfredini and already undisputedly the third oldest man ever recorded.

Born on April 19 in 1897, he would have been 6-years-old when the Wright brothers flew the first plane ever, already 64-years-old when Yuri Gagarin first flew into space and 93-years-old when the World Wide Web came to being.

Kimura's feat as the world's oldest man has been recognized by the Gerontology Research Group, an international body that specifically deals in longevity research.

Living with family in his home in Kyoto, he celebrated his 115th birthday in April earlier this year.

He attributes his longevity to sunlight and his efforts to keeping his mind fit.

"I don't know exactly... maybe it's all thanks to the sun above me. I am always looking up towards the sky, that is how I am," he added when asked how he thinks he survived so long.

"'Thank you very much. You are very kind man': I've been learning to speak in English," he told reporters, showing off his newly acquired English phrase earlier this year.

Kimura has five children, 14 grandchildren, 25 great-grandchildren and 13 great-great-grandchildren, the youngest being 11-month-old great-great-grandson Shoichi Okada.

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