1958 year born – age now in 2023?

How old am I in 2023 if I was born in 1958? Today's date is - 1 February 2023.

If year of birth - 1958, he is now:
64 years old or 65 years old*

*Depends on before or after 1 February 1958 year he was born.

If a person was born from January 1 1958 to 1 February 1958 inclusively, he is 65 years old now, otherwise, if after 1 February 1958 (until December 31 1958 inclusively), then he is still 64 years old now.

Other examples:

If 1941 year of birth - already 82 years or still 81 years.
If 1957 year of birth - already 66 years or still 65 years.
If 1992 year of birth - already 31 years or still 30 years.
If 2011 year of birth - already 12 years or still 11 years.

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