31 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 31 years old now, what year was he born? See below:

If 31 years old, year of birth is:
1994 or 1995*

*It depends on whether he was born before or after 1 January 1995.

If now 31 years and his year of birth 1994 if he was born after 28 October 1994 until 31 december 1994 inclusively, and his year of birth is 1995 if he was born from 1 January 1995 to 28 October 1995.

Other examples:

If now 10 years, year of birth 2015 or 2016
If now 12 years, year of birth 2013 or 2014
If now 29 years, year of birth 1996 or 1997
If now 84 years, year of birth 1941 or 1942

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