77 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 77 years old now, what year was he born? See below:

If 77 years old, year of birth is:
1948 or 1949*

*It depends on whether he was born before or after 1 January 1949.

If now 77 years and his year of birth 1948 if he was born after 28 October 1948 until 31 december 1948 inclusively, and his year of birth is 1949 if he was born from 1 January 1949 to 28 October 1949.

Other examples:

If now 3 years, year of birth 2022 or 2023
If now 15 years, year of birth 2010 or 2011
If now 24 years, year of birth 2001 or 2002
If now 57 years, year of birth 1968 or 1969

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