127 years old now in 2025 - what year born?

Today, 7 November 2025 if a person is 127 years old now, what year was he born? See below:

If 127 years old, year of birth is:
1897 or 1898*

*It depends on whether he was born before or after 1 January 1898.

If now 127 years and his year of birth 1897 if he was born after 7 November 1897 until 31 december 1897 inclusively, and his year of birth is 1898 if he was born from 1 January 1898 to 7 November 1898.

Other examples:

If now 9 years, year of birth 2015 or 2016
If now 14 years, year of birth 2010 or 2011
If now 30 years, year of birth 1994 or 1995
If now 98 years, year of birth 1926 or 1927

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