78 years old now in 2023 - what year born?

Today, 23 September 2023 if a person is 78 years old now, what year was he born? See below:

If 78 years old, year of birth is:
1944 or 1945*

*It depends on whether he was born before or after 1 January 1945.

If now 78 years and his year of birth 1944 if he was born after 23 September 1944 until 31 december 1944 inclusively, and his year of birth is 1945 if he was born from 1 January 1945 to 23 September 1945.

Other examples:

If now 12 years, year of birth 2010 or 2011
If now 16 years, year of birth 2006 or 2007
If now 21 years, year of birth 2001 or 2002
If now 38 years, year of birth 1984 or 1985

HTML code:

BB code: