127 years old now in 2023 - what year born?

Today, 27 March 2023 if a person is 127 years old now, what year was he born? See below:

If 127 years old, year of birth is:
1895 or 1896*

*It depends on whether he was born before or after 1 January 1896.

If now 127 years and his year of birth 1895 if he was born after 27 March 1895 until 31 december 1895 inclusively, and his year of birth is 1896 if he was born from 1 January 1896 to 27 March 1896.

Other examples:

If now 12 years, year of birth 2010 or 2011
If now 12 years, year of birth 2010 or 2011
If now 20 years, year of birth 2002 or 2003
If now 91 years, year of birth 1931 or 1932

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