46 years old now in 2026 - what year born?

Today, 28 October 2026 if a person is 46 years old now, what year was he born? See below:

If 46 years old, year of birth is:
1979 or 1980*

*It depends on whether he was born before or after 1 January 1980.

If now 46 years and his year of birth 1979 if he was born after 28 October 1979 until 31 december 1979 inclusively, and his year of birth is 1980 if he was born from 1 January 1980 to 28 October 1980.

Other examples:

If now 6 years, year of birth 2019 or 2020
If now 13 years, year of birth 2012 or 2013
If now 21 years, year of birth 2004 or 2005
If now 83 years, year of birth 1942 or 1943

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