139 years old now in 2023 - what year born?

Today, 22 March 2023 if a person is 139 years old now, what year was he born? See below:

If 139 years old, year of birth is:
1883 or 1884*

*It depends on whether he was born before or after 1 January 1884.

If now 139 years and his year of birth 1883 if he was born after 22 March 1883 until 31 december 1883 inclusively, and his year of birth is 1884 if he was born from 1 January 1884 to 22 March 1884.

Other examples:

If now 4 years, year of birth 2018 or 2019
If now 12 years, year of birth 2010 or 2011
If now 22 years, year of birth 2000 or 2001
If now 34 years, year of birth 1988 or 1989

HTML code:

BB code: