62 years old now in 2023 - what year born?

Today, 29 May 2023 if a person is 62 years old now, what year was he born? See below:

If 62 years old, year of birth is:
1960 or 1961*

*It depends on whether he was born before or after 1 January 1961.

If now 62 years and his year of birth 1960 if he was born after 29 May 1960 until 31 december 1960 inclusively, and his year of birth is 1961 if he was born from 1 January 1961 to 29 May 1961.

Other examples:

If now 3 years, year of birth 2019 or 2020
If now 16 years, year of birth 2006 or 2007
If now 19 years, year of birth 2003 or 2004
If now 81 years, year of birth 1941 or 1942

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