126 years old now in 2023 - what year born?

Today, 30 November 2023 if a person is 126 years old now, what year was he born? See below:

If 126 years old, year of birth is:
1896 or 1897*

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

If now 126 years and his year of birth 1896 if he was born after 30 November 1896 until 31 december 1896 inclusively, and his year of birth is 1897 if he was born from 1 January 1897 to 30 November 1897.

Other examples:

If now 10 years, year of birth 2012 or 2013
If now 17 years, year of birth 2005 or 2006
If now 20 years, year of birth 2002 or 2003
If now 69 years, year of birth 1953 or 1954

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