66 years old now in 2024 - what year born?

Today, 15 September 2024 if a person is 66 years old now, what year was he born? See below:

If 66 years old, year of birth is:
1957 or 1958*

*It depends on whether he was born before or after 1 January 1958.

If now 66 years and his year of birth 1957 if he was born after 15 September 1957 until 31 december 1957 inclusively, and his year of birth is 1958 if he was born from 1 January 1958 to 15 September 1958.

Other examples:

If now 12 years, year of birth 2011 or 2012
If now 16 years, year of birth 2007 or 2008
If now 21 years, year of birth 2002 or 2003
If now 60 years, year of birth 1963 or 1964

HTML code:

BB code: