Ignorant period without Sun and Times? (4,4)
I believe the answer is:
dark ages
'ignorant period' is the definition.
(era of relatively little discovery or innovation)
'without sun and times?' is the wordplay.
'without sun' becomes 'dark'.
'and' is a charade indicator (letters next to each other).
'times?' becomes 'ages' (age is a kind of time).
'dark'+'ages'='DARK AGES'
(Other definitions for dark ages that I've seen before include "'Period of history between classical antiquity and the Italian Renaissance (4,4)'" , "Period in Europe approx 500 - 1100 AD" , "Period of European history from 5c to 9c or 12c" , "Times delighted" , "Unenlightened period?" .)