37 years old now in 2024 - what year born?

Today, 4 December 2024 if a person is 37 years old now, what year was he born? See below:

If 37 years old, year of birth is:
1986 or 1987*

*It depends on whether he was born before or after 1 January 1987.

If now 37 years and his year of birth 1986 if he was born after 4 December 1986 until 31 december 1986 inclusively, and his year of birth is 1987 if he was born from 1 January 1987 to 4 December 1987.

Other examples:

If now 7 years, year of birth 2016 or 2017
If now 17 years, year of birth 2006 or 2007
If now 27 years, year of birth 1996 or 1997
If now 54 years, year of birth 1969 or 1970

HTML code:

BB code: