Calm about finding articles in calendar (7)
I believe the answer is:
almanac
'calendar' is the definition.
(I've seen this before)
'calm about finding articles in' is the wordplay.
'about' indicates an anagram.
'finding articles' becomes 'ana' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'in' is an insertion indicator.
'calm' is an anagram of 'almc'.
'almc' placed around 'ana' is 'ALMANAC'.
Can you help me to learn more?
(Other definitions for almanac that I've seen before include "Annual publication with weather forecasts etc." , "Calendar with astronomical data and other information" , "Annual calendar or handbook" , "Kind of year-book like Old Moore's" , "Annual publication, Old Moore's perhaps" .)