149 years old now in 2023 - what year born?

Today, 30 November 2023 if a person is 149 years old now, what year was he born? See below:

If 149 years old, year of birth is:
1873 or 1874*

*It depends on whether he was born before or after 1 January 1874.

If now 149 years and his year of birth 1873 if he was born after 30 November 1873 until 31 december 1873 inclusively, and his year of birth is 1874 if he was born from 1 January 1874 to 30 November 1874.

Other examples:

If now 10 years, year of birth 2012 or 2013
If now 17 years, year of birth 2005 or 2006
If now 27 years, year of birth 1995 or 1996
If now 77 years, year of birth 1945 or 1946

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