143 years old now in 2025 - what year born?

Today, 19 December 2025 if a person is 143 years old now, what year was he born? See below:

If 143 years old, year of birth is:
1881 or 1882*

*It depends on whether he was born before or after 1 January 1882.

If now 143 years and his year of birth 1881 if he was born after 19 December 1881 until 31 december 1881 inclusively, and his year of birth is 1882 if he was born from 1 January 1882 to 19 December 1882.

Other examples:

If now 6 years, year of birth 2018 or 2019
If now 12 years, year of birth 2012 or 2013
If now 24 years, year of birth 2000 or 2001
If now 96 years, year of birth 1928 or 1929

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