81 years old now in 2024 - what year born?


Today, 18 May 2024 if a person is 81 years old now, what year was he born? See below:


If 81 years old, year of birth is:
1942 or 1943*
*It depends on whether he was born before or after 1 January 1943.


If now 81 years and his year of birth 1942 if he was born after 18 May 1942 until 31 december 1942 inclusively, and his year of birth is 1943 if he was born from 1 January 1943 to 18 May 1943.


Other examples:

If now 9 years, year of birth 2014 or 2015
If now 17 years, year of birth 2006 or 2007
If now 29 years, year of birth 1994 or 1995
If now 72 years, year of birth 1951 or 1952

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