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 11 years, year of birth 2014 or 2015
If now 16 years, year of birth 2009 or 2010
If now 22 years, year of birth 2003 or 2004
If now 98 years, year of birth 1927 or 1928

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