46 years old now in 2024 - what year born?

Today, 14 October 2024 if a person is 46 years old now, what year was he born? See below:

If 46 years old, year of birth is:
1977 or 1978*

*It depends on whether he was born before or after 1 January 1978.

If now 46 years and his year of birth 1977 if he was born after 14 October 1977 until 31 december 1977 inclusively, and his year of birth is 1978 if he was born from 1 January 1978 to 14 October 1978.

Other examples:

If now 7 years, year of birth 2016 or 2017
If now 17 years, year of birth 2006 or 2007
If now 27 years, year of birth 1996 or 1997
If now 74 years, year of birth 1949 or 1950

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