HourOfTheYear returns the number of complete hours between the TDateTime value entered as AValue, and 12:00 A.M. of the first day of the year that includes AValue.
Declaration: Function HourOfTheYear(const AValue: TDateTime): Word;
A simple example follows.
procedure ScriptEvent (var Value : variant);
var
TheYear : word;
begin
//YESTERDAY is 28-11-2023, so the result is 7944
TheYear := HourOfTheYear(Yesterday);
LogInfo('The number of hours since 1st Jan are '+IntToStr(TheYear));