Hours before present (4)
I believe the answer is:
here
'present' is the definition.
(both can mean in attendance)
'hours before' is the wordplay.
'hours' becomes 'h'.
'before' becomes 'ere' (poetic term for 'before').
'h'+'ere'='HERE'
(Other definitions for here that I've seen before include "final clue?" , ""___ be dragons" (old map inscription?)" , "On this spot" , "To hand" , "At this stage" .)