113 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 113 years old now, what year was he born? See below:

If 113 years old, year of birth is:
1912 or 1913*

*It depends on whether he was born before or after 1 January 1913.

If now 113 years and his year of birth 1912 if he was born after 28 October 1912 until 31 december 1912 inclusively, and his year of birth is 1913 if he was born from 1 January 1913 to 28 October 1913.

Other examples:

If now 4 years, year of birth 2021 or 2022
If now 12 years, year of birth 2013 or 2014
If now 26 years, year of birth 1999 or 2000
If now 47 years, year of birth 1978 or 1979

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