21 years old now in 2021 - what year born?


Today, 30 July 2021 if a person is 21 years old now, what year was he born? See below:


If 21 years old, year of birth is:
1999 or 2000*
*It depends on whether he was born before or after 1 January 2000.


If now 21 years and his year of birth 1999 if he was born after 30 July 1999 until 31 december 1999 inclusively, and his year of birth is 2000 if he was born from 1 January 2000 to 30 July 2000.


Other examples:

If now 8 years, year of birth 2012 or 2013
If now 14 years, year of birth 2006 or 2007
If now 29 years, year of birth 1991 or 1992
If now 43 years, year of birth 1977 or 1978

HTML code:
BB code:

More: