137 years old now in 2025 - what year born?

Today, 16 June 2025 if a person is 137 years old now, what year was he born? See below:

If 137 years old, year of birth is:
1887 or 1888*

*It depends on whether he was born before or after 1 January 1888.

If now 137 years and his year of birth 1887 if he was born after 16 June 1887 until 31 december 1887 inclusively, and his year of birth is 1888 if he was born from 1 January 1888 to 16 June 1888.

Other examples:

If now 7 years, year of birth 2017 or 2018
If now 18 years, year of birth 2006 or 2007
If now 22 years, year of birth 2002 or 2003
If now 37 years, year of birth 1987 or 1988

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