29 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 29 years old now, what year was he born? See below:

If 29 years old, year of birth is:
1996 or 1997*

*It depends on whether he was born before or after 1 January 1997.

If now 29 years and his year of birth 1996 if he was born after 28 October 1996 until 31 december 1996 inclusively, and his year of birth is 1997 if he was born from 1 January 1997 to 28 October 1997.

Other examples:

If now 5 years, year of birth 2020 or 2021
If now 18 years, year of birth 2007 or 2008
If now 20 years, year of birth 2005 or 2006
If now 75 years, year of birth 1950 or 1951

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