88 years old now in 2024 - what year born?

Today, 15 October 2024 if a person is 88 years old now, what year was he born? See below:

If 88 years old, year of birth is:
1935 or 1936*

*It depends on whether he was born before or after 1 January 1936.

If now 88 years and his year of birth 1935 if he was born after 15 October 1935 until 31 december 1935 inclusively, and his year of birth is 1936 if he was born from 1 January 1936 to 15 October 1936.

Other examples:

If now 7 years, year of birth 2016 or 2017
If now 15 years, year of birth 2008 or 2009
If now 25 years, year of birth 1998 or 1999
If now 74 years, year of birth 1949 or 1950

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