23 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 23 years old now, what year was he born? See below:

If 23 years old, year of birth is:
2002 or 2003*

*It depends on whether he was born before or after 1 January 2003.

If now 23 years and his year of birth 2002 if he was born after 28 October 2002 until 31 december 2002 inclusively, and his year of birth is 2003 if he was born from 1 January 2003 to 28 October 2003.

Other examples:

If now 10 years, year of birth 2015 or 2016
If now 17 years, year of birth 2008 or 2009
If now 30 years, year of birth 1995 or 1996
If now 95 years, year of birth 1930 or 1931

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