63 years old now in 2022 - what year born?

Today, 1 October 2022 if a person is 63 years old now, what year was he born? See below:

If 63 years old, year of birth is:
1958 or 1959*

*It depends on whether he was born before or after 1 January 1959.

If now 63 years and his year of birth 1958 if he was born after 1 October 1958 until 31 december 1958 inclusively, and his year of birth is 1959 if he was born from 1 January 1959 to 1 October 1959.

Other examples:

If now 4 years, year of birth 2017 or 2018
If now 12 years, year of birth 2009 or 2010
If now 28 years, year of birth 1993 or 1994
If now 77 years, year of birth 1944 or 1945

HTML code:

BB code: