Almost time, following everybody in fading light (9)
I believe the answer is:
nightfall
'fading light' is the definition.
(when light begins to fade)
'almost time following everybody' is the wordplay.
'almost' becomes 'nigh' (nigh can mean almost or nearly).
'time' becomes 't' (abbreviation).
'following' becomes 'f' (used when citing page numbers etc).
'everybody' becomes 'all' (all people).
'nigh'+'t'+'f'+'all'='NIGHTFALL'
'in' is the link.
(Other definitions for nightfall that I've seen before include "when evenings draw in" , "start of the dark time" , "Dusk" , "after sunset" , "End of day" .)