150 years old now in 2020 - what year born?


Today, 28 November 2020 if a person is 150 years old now, what year was he born? See below:


If 150 years old, year of birth is:
1869 or 1870*
*It depends on whether he was born before or after 1 January 1870.


If now 150 years and his year of birth 1869 if he was born after 28 November 1869 until 31 december 1869 inclusively, and his year of birth is 1870 if he was born from 1 January 1870 to 28 November 1870.


Other examples:

If now 8 years, year of birth 2011 or 2012
If now 12 years, year of birth 2007 or 2008
If now 22 years, year of birth 1997 or 1998
If now 37 years, year of birth 1982 or 1983

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