60 years old now in 2025 - what year born?

Today, 22 April 2025 if a person is 60 years old now, what year was he born? See below:

If 60 years old, year of birth is:
1964 or 1965*

*It depends on whether he was born before or after 1 January 1965.

If now 60 years and his year of birth 1964 if he was born after 22 April 1964 until 31 december 1964 inclusively, and his year of birth is 1965 if he was born from 1 January 1965 to 22 April 1965.

Other examples:

If now 11 years, year of birth 2013 or 2014
If now 18 years, year of birth 2006 or 2007
If now 29 years, year of birth 1995 or 1996
If now 39 years, year of birth 1985 or 1986

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