131 years old now in 2023 - what year born?

Today, 10 June 2023 if a person is 131 years old now, what year was he born? See below:

If 131 years old, year of birth is:
1891 or 1892*

*It depends on whether he was born before or after 1 January 1892.

If now 131 years and his year of birth 1891 if he was born after 10 June 1891 until 31 december 1891 inclusively, and his year of birth is 1892 if he was born from 1 January 1892 to 10 June 1892.

Other examples:

If now 10 years, year of birth 2012 or 2013
If now 13 years, year of birth 2009 or 2010
If now 29 years, year of birth 1993 or 1994
If now 40 years, year of birth 1982 or 1983

HTML code:

BB code: