How old was jfk when manny pacquiao was born?

What was the age (length of time since creation) of John Fitzgerald "Jack" Kennedy pronunciation (May 29, 1917), often referred to by his initials JFK, the 35th President of the United States, serving from 1961 until 1963 at the time Emmanuel "Manny" Dapidran Pacquiao, PLH (born December 17, 1978), the Filipino professional boxer and politician is born on (has as his or her date of birth)?

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Show reasoning Reasoning

I followed this chain of reasoning:

I know from locally stored knowledge that:
December 17th 1978 is the birthdate of Manny Pacquiáo ([fact: ["124527129@trueknowledge.com"]])

May 29th 1917 is the birthdate of John F. Kennedy ([fact: ["18362746@trueknowledge.com"]])

By calculation (generator: ["human_age@trueknowledge.com"]) I know that:
Fact 1: 61 years, 6 months and 18 days old is the age of John F. Kennedy

Fact 1 is true at December 17th 1978

By calculation (generator: ["applies_at_timepoint@trueknowledge.com"]) I know that:
Fact 1 is true at December 1978

By calculation (generator: ["human_age@trueknowledge.com"]) I know that:
Fact 1: 61 years, 6 months and 18 days old is a age

Fact 1: 61 years, 6 months and 18 days old applies to John F. Kennedy

Fact 1 is true at December 17th 1978

By calculation (generator: ["ismoreaccurate1@trueknowledge.com"]) I know that:
December 17th 1978 is a more accurate version of December 1978

I used the following facts to provide this answer:

December 17th 1978 is the birthdate of Manny Pacquiáo

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May 29th 1917 is the birthdate of John F. Kennedy

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