49 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 49 years old now, what year was he born? See below:

If 49 years old, year of birth is:
1976 or 1977*

*It depends on whether he was born before or after 1 January 1977.

If now 49 years and his year of birth 1976 if he was born after 28 October 1976 until 31 december 1976 inclusively, and his year of birth is 1977 if he was born from 1 January 1977 to 28 October 1977.

Other examples:

If now 3 years, year of birth 2022 or 2023
If now 18 years, year of birth 2007 or 2008
If now 26 years, year of birth 1999 or 2000
If now 96 years, year of birth 1929 or 1930

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