1917 year born – age now in 2022?

How old am I in 2022 if I was born in 1917? Today's date is - 1 October 2022.

If year of birth - 1917, he is now:
104 years old or 105 years old*

*Depends on before or after 1 October 1917 year he was born.

If a person was born from January 1 1917 to 1 October 1917 inclusively, he is 105 years old now, otherwise, if after 1 October 1917 (until December 31 1917 inclusively), then he is still 104 years old now.

Other examples:

If 1943 year of birth - already 79 years or still 78 years.
If 1965 year of birth - already 57 years or still 56 years.
If 1989 year of birth - already 33 years or still 32 years.
If 1999 year of birth - already 23 years or still 22 years.

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