29 years old now in 2025 - what year born?

Today, 19 March 2025 if a person is 29 years old now, what year was he born? See below:

If 29 years old, year of birth is:
1995 or 1996*

*It depends on whether he was born before or after 1 January 1996.

If now 29 years and his year of birth 1995 if he was born after 19 March 1995 until 31 december 1995 inclusively, and his year of birth is 1996 if he was born from 1 January 1996 to 19 March 1996.

Other examples:

If now 5 years, year of birth 2019 or 2020
If now 16 years, year of birth 2008 or 2009
If now 19 years, year of birth 2005 or 2006
If now 91 years, year of birth 1933 or 1934

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