30 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 30 years old now, what year was he born? See below:

If 30 years old, year of birth is:
1995 or 1996*

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

If now 30 years and his year of birth 1995 if he was born after 28 October 1995 until 31 december 1995 inclusively, and his year of birth is 1996 if he was born from 1 January 1996 to 28 October 1996.

Other examples:

If now 9 years, year of birth 2016 or 2017
If now 15 years, year of birth 2010 or 2011
If now 30 years, year of birth 1995 or 1996
If now 75 years, year of birth 1950 or 1951

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