150 years old now in 2025 - what year born?

Today, 23 January 2025 if a person is 150 years old now, what year was he born? See below:

If 150 years old, year of birth is:
1874 or 1875*

*It depends on whether he was born before or after 1 January 1875.

If now 150 years and his year of birth 1874 if he was born after 23 January 1874 until 31 december 1874 inclusively, and his year of birth is 1875 if he was born from 1 January 1875 to 23 January 1875.

Other examples:

If now 8 years, year of birth 2016 or 2017
If now 15 years, year of birth 2009 or 2010
If now 19 years, year of birth 2005 or 2006
If now 95 years, year of birth 1929 or 1930

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