64 years old now in 2025 - what year born?

Today, 20 March 2025 if a person is 64 years old now, what year was he born? See below:

If 64 years old, year of birth is:
1960 or 1961*

*It depends on whether he was born before or after 1 January 1961.

If now 64 years and his year of birth 1960 if he was born after 20 March 1960 until 31 december 1960 inclusively, and his year of birth is 1961 if he was born from 1 January 1961 to 20 March 1961.

Other examples:

If now 7 years, year of birth 2017 or 2018
If now 18 years, year of birth 2006 or 2007
If now 19 years, year of birth 2005 or 2006
If now 69 years, year of birth 1955 or 1956

HTML code:

BB code: