99 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 99 years old now, what year was he born? See below:

If 99 years old, year of birth is:
1926 or 1927*

*It depends on whether he was born before or after 1 January 1927.

If now 99 years and his year of birth 1926 if he was born after 28 October 1926 until 31 december 1926 inclusively, and his year of birth is 1927 if he was born from 1 January 1927 to 28 October 1927.

Other examples:

If now 7 years, year of birth 2018 or 2019
If now 17 years, year of birth 2008 or 2009
If now 19 years, year of birth 2006 or 2007
If now 38 years, year of birth 1987 or 1988

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