122 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 122 years old now, what year was he born? See below:

If 122 years old, year of birth is:
1903 or 1904*

*It depends on whether he was born before or after 1 January 1904.

If now 122 years and his year of birth 1903 if he was born after 28 October 1903 until 31 december 1903 inclusively, and his year of birth is 1904 if he was born from 1 January 1904 to 28 October 1904.

Other examples:

If now 3 years, year of birth 2022 or 2023
If now 13 years, year of birth 2012 or 2013
If now 24 years, year of birth 2001 or 2002
If now 47 years, year of birth 1978 or 1979

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