Present-day capital equally accommodating at another time (6)
I believe the answer is:
athens
'present-day capital' is the definition.
'Athens' can be an answer for 'capital' (capital of Greece). I'm unsure of the 'present-day' bit.
'equally accommodating at another time' is the wordplay.
'equally' becomes 'as' (synonyms).
'accommodating' means one lot of letters goes inside another.
'at another time' becomes 'then' (synonyms).
'as' going around 'then' is 'ATHENS'.
Can you help me to learn more?
(Other definitions for athens that I've seen before include "Hasten (anag) -- capital city" , "City in which 13 Across founded school" , "Hen sat down in the city" , "EU capital" , "City of the Parthenon" .)