128 years old now in 2025 - what year born?

Today, 16 June 2025 if a person is 128 years old now, what year was he born? See below:

If 128 years old, year of birth is:
1896 or 1897*

*It depends on whether he was born before or after 1 January 1897.

If now 128 years and his year of birth 1896 if he was born after 16 June 1896 until 31 december 1896 inclusively, and his year of birth is 1897 if he was born from 1 January 1897 to 16 June 1897.

Other examples:

If now 6 years, year of birth 2018 or 2019
If now 14 years, year of birth 2010 or 2011
If now 25 years, year of birth 1999 or 2000
If now 34 years, year of birth 1990 or 1991

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