65 years old now in 2025 - what year born?

Today, 22 April 2025 if a person is 65 years old now, what year was he born? See below:

If 65 years old, year of birth is:
1959 or 1960*

*It depends on whether he was born before or after 1 January 1960.

If now 65 years and his year of birth 1959 if he was born after 22 April 1959 until 31 december 1959 inclusively, and his year of birth is 1960 if he was born from 1 January 1960 to 22 April 1960.

Other examples:

If now 12 years, year of birth 2012 or 2013
If now 14 years, year of birth 2010 or 2011
If now 25 years, year of birth 1999 or 2000
If now 79 years, year of birth 1945 or 1946

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