Dancing-girl with special talent announced for calendar (7)
I believe the answer is:
almanac
'announced for calendar' is the definition.
'almanac' can be an answer for 'calendar' (I've seen this before). I am unsure of the 'announced for' bit.
'dancing-girl with special talent' is the wordplay.
'dancing girl' becomes 'alma' (I've seen this before).
'with special talent' becomes 'nac' (I am not sure about this - if you are sure you should believe this answer much more).
'alma'+'nac'='ALMANAC'
Can you help me to learn more?
(Other definitions for almanac that I've seen before include "issue every year" , "Annual reference book" , "Annual list of dates" , "Indicates dates" , "Calendar with detailed information" .)