Year book (7)
I believe the answer is:
almanac
'year book' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for almanac that I've seen before include "Kind of year-book like Old Moore's" , "Calendar listing astronomical events etc" , "Statistical annual" , "Annual publication providing information like Old Moore's" , "Year book with astronomical events, tides etc" .)