66 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 66 years old now, what year was he born? See below:

If 66 years old, year of birth is:
1959 or 1960*

*It depends on whether he was born before or after 1 January 1960.

If now 66 years and his year of birth 1959 if he was born after 28 October 1959 until 31 december 1959 inclusively, and his year of birth is 1960 if he was born from 1 January 1960 to 28 October 1960.

Other examples:

If now 9 years, year of birth 2016 or 2017
If now 13 years, year of birth 2012 or 2013
If now 22 years, year of birth 2003 or 2004
If now 83 years, year of birth 1942 or 1943

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