78 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 78 years old now, what year was he born? See below:

If 78 years old, year of birth is:
1947 or 1948*

*It depends on whether he was born before or after 1 January 1948.

If now 78 years and his year of birth 1947 if he was born after 28 October 1947 until 31 december 1947 inclusively, and his year of birth is 1948 if he was born from 1 January 1948 to 28 October 1948.

Other examples:

If now 3 years, year of birth 2022 or 2023
If now 17 years, year of birth 2008 or 2009
If now 22 years, year of birth 2003 or 2004
If now 56 years, year of birth 1969 or 1970

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