Treating cash flows as if they occur at the end of a year as opposed to the date convention. Under the end-of-year convention, the present is time 0, the end of year 1 occurs one year hence, etc.
END-OF-YEAR CONVENTION
Meaning of END-OF-YEAR CONVENTION in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012