2028 year born – age now in 2023?

He was not born yet in 2023. The year 2028 has not come yet! 2028 will come after 5 years.

Other examples:

If 1950 year of birth - already 73 years or still 72 years.
If 1957 year of birth - already 66 years or still 65 years.
If 1982 year of birth - already 41 years or still 40 years.
If 2008 year of birth - already 15 years or still 14 years.

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