137 years old now in 2023 - what year born?

Today, 26 March 2023 if a person is 137 years old now, what year was he born? See below:

If 137 years old, year of birth is:
1885 or 1886*

*It depends on whether he was born before or after 1 January 1886.

If now 137 years and his year of birth 1885 if he was born after 26 March 1885 until 31 december 1885 inclusively, and his year of birth is 1886 if he was born from 1 January 1886 to 26 March 1886.

Other examples:

If now 8 years, year of birth 2014 or 2015
If now 14 years, year of birth 2008 or 2009
If now 20 years, year of birth 2002 or 2003
If now 87 years, year of birth 1935 or 1936

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