93 years old now in 2025 - what year born?

Today, 19 December 2025 if a person is 93 years old now, what year was he born? See below:

If 93 years old, year of birth is:
1931 or 1932*

*It depends on whether he was born before or after 1 January 1932.

If now 93 years and his year of birth 1931 if he was born after 19 December 1931 until 31 december 1931 inclusively, and his year of birth is 1932 if he was born from 1 January 1932 to 19 December 1932.

Other examples:

If now 9 years, year of birth 2015 or 2016
If now 14 years, year of birth 2010 or 2011
If now 20 years, year of birth 2004 or 2005
If now 71 years, year of birth 1953 or 1954

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