60 years old now in 2024 - what year born?

Today, 10 October 2024 if a person is 60 years old now, what year was he born? See below:

If 60 years old, year of birth is:
1963 or 1964*

*It depends on whether he was born before or after 1 January 1964.

If now 60 years and his year of birth 1963 if he was born after 10 October 1963 until 31 december 1963 inclusively, and his year of birth is 1964 if he was born from 1 January 1964 to 10 October 1964.

Other examples:

If now 7 years, year of birth 2016 or 2017
If now 13 years, year of birth 2010 or 2011
If now 29 years, year of birth 1994 or 1995
If now 52 years, year of birth 1971 or 1972

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