116 years old now in 2023 - what year born?

Today, 30 November 2023 if a person is 116 years old now, what year was he born? See below:

If 116 years old, year of birth is:
1906 or 1907*

*It depends on whether he was born before or after 1 January 1907.

If now 116 years and his year of birth 1906 if he was born after 30 November 1906 until 31 december 1906 inclusively, and his year of birth is 1907 if he was born from 1 January 1907 to 30 November 1907.

Other examples:

If now 10 years, year of birth 2012 or 2013
If now 14 years, year of birth 2008 or 2009
If now 23 years, year of birth 1999 or 2000
If now 86 years, year of birth 1936 or 1937

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