63 years old now in 2025 - what year born?

Today, 16 June 2025 if a person is 63 years old now, what year was he born? See below:

If 63 years old, year of birth is:
1961 or 1962*

*It depends on whether he was born before or after 1 January 1962.

If now 63 years and his year of birth 1961 if he was born after 16 June 1961 until 31 december 1961 inclusively, and his year of birth is 1962 if he was born from 1 January 1962 to 16 June 1962.

Other examples:

If now 7 years, year of birth 2017 or 2018
If now 16 years, year of birth 2008 or 2009
If now 28 years, year of birth 1996 or 1997
If now 65 years, year of birth 1959 or 1960

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