2023 year born – age now in 2025?

How old am I in 2025 if I was born in 2023? Today's date is - 16 January 2025.

If year of birth - 2023, he is now:
1 years old or 2 years old*

*Depends on before or after 16 January 2023 year he was born.

If a person was born from January 1 2023 to 16 January 2023 inclusively, he is 2 years old now, otherwise, if after 16 January 2023 (until December 31 2023 inclusively), then he is still 1 years old now.

Other examples:

If 1902 year of birth - already 123 years or still 122 years.
If 1971 year of birth - already 54 years or still 53 years.
If 1982 year of birth - already 43 years or still 42 years.
If 2021 year of birth - already 4 years or still 3 years.

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