44 years old now in 2023 - what year born?

Today, 24 September 2023 if a person is 44 years old now, what year was he born? See below:

If 44 years old, year of birth is:
1978 or 1979*

*It depends on whether he was born before or after 1 January 1979.

If now 44 years and his year of birth 1978 if he was born after 24 September 1978 until 31 december 1978 inclusively, and his year of birth is 1979 if he was born from 1 January 1979 to 24 September 1979.

Other examples:

If now 12 years, year of birth 2010 or 2011
If now 17 years, year of birth 2005 or 2006
If now 24 years, year of birth 1998 or 1999
If now 62 years, year of birth 1960 or 1961

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