2000 year born – age now in 2022?

How old am I in 2022 if I was born in 2000? Today's date is - 27 September 2022.

If year of birth - 2000, he is now:
21 years old or 22 years old*

*Depends on before or after 27 September 2000 year he was born.

If a person was born from January 1 2000 to 27 September 2000 inclusively, he is 22 years old now, otherwise, if after 27 September 2000 (until December 31 2000 inclusively), then he is still 21 years old now.

Other examples:

If 1946 year of birth - already 76 years or still 75 years.
If 1954 year of birth - already 68 years or still 67 years.
If 1993 year of birth - already 29 years or still 28 years.
If 2011 year of birth - already 11 years or still 10 years.

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