22 years old now in 2025 - what year born?

Today, 19 December 2025 if a person is 22 years old now, what year was he born? See below:

If 22 years old, year of birth is:
2002 or 2003*

*It depends on whether he was born before or after 1 January 2003.

If now 22 years and his year of birth 2002 if he was born after 19 December 2002 until 31 december 2002 inclusively, and his year of birth is 2003 if he was born from 1 January 2003 to 19 December 2003.

Other examples:

If now 8 years, year of birth 2016 or 2017
If now 18 years, year of birth 2006 or 2007
If now 19 years, year of birth 2005 or 2006
If now 68 years, year of birth 1956 or 1957

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