62 years old now in 2025 - what year born?

Today, 19 December 2025 if a person is 62 years old now, what year was he born? See below:

If 62 years old, year of birth is:
1962 or 1963*

*It depends on whether he was born before or after 1 January 1963.

If now 62 years and his year of birth 1962 if he was born after 19 December 1962 until 31 december 1962 inclusively, and his year of birth is 1963 if he was born from 1 January 1963 to 19 December 1963.

Other examples:

If now 3 years, year of birth 2021 or 2022
If now 15 years, year of birth 2009 or 2010
If now 19 years, year of birth 2005 or 2006
If now 70 years, year of birth 1954 or 1955

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