146 years old now in 2021 - what year born?

Today, 23 October 2021 if a person is 146 years old now, what year was he born? See below:

If 146 years old, year of birth is:
1874 or 1875*

*It depends on whether he was born before or after 1 January 1875.

If now 146 years and his year of birth 1874 if he was born after 23 October 1874 until 31 december 1874 inclusively, and his year of birth is 1875 if he was born from 1 January 1875 to 23 October 1875.

Other examples:

If now 11 years, year of birth 2009 or 2010
If now 15 years, year of birth 2005 or 2006
If now 27 years, year of birth 1993 or 1994
If now 86 years, year of birth 1934 or 1935

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