81 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 81 years old now, what year was he born? See below:

If 81 years old, year of birth is:
1944 or 1945*

*It depends on whether he was born before or after 1 January 1945.

If now 81 years and his year of birth 1944 if he was born after 28 October 1944 until 31 december 1944 inclusively, and his year of birth is 1945 if he was born from 1 January 1945 to 28 October 1945.

Other examples:

If now 6 years, year of birth 2019 or 2020
If now 14 years, year of birth 2011 or 2012
If now 23 years, year of birth 2002 or 2003
If now 62 years, year of birth 1963 or 1964

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