46 years old now in 2025 - what year born?

Today, 16 June 2025 if a person is 46 years old now, what year was he born? See below:

If 46 years old, year of birth is:
1978 or 1979*

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

If now 46 years and his year of birth 1978 if he was born after 16 June 1978 until 31 december 1978 inclusively, and his year of birth is 1979 if he was born from 1 January 1979 to 16 June 1979.

Other examples:

If now 12 years, year of birth 2012 or 2013
If now 12 years, year of birth 2012 or 2013
If now 26 years, year of birth 1998 or 1999
If now 73 years, year of birth 1951 or 1952

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