11 years old now in 2023 - what year born?

Today, 22 March 2023 if a person is 11 years old now, what year was he born? See below:

If 11 years old, year of birth is:
2011 or 2012*

*It depends on whether he was born before or after 1 January 2012.

If now 11 years and his year of birth 2011 if he was born after 22 March 2011 until 31 december 2011 inclusively, and his year of birth is 2012 if he was born from 1 January 2012 to 22 March 2012.

Other examples:

If now 12 years, year of birth 2010 or 2011
If now 15 years, year of birth 2007 or 2008
If now 22 years, year of birth 2000 or 2001
If now 92 years, year of birth 1930 or 1931

HTML code:

BB code: