Time to start another day (8)
I believe the answer is:
midnight
'time' is the definition.
(I know that Midnight is a type of hour)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for midnight that I've seen before include "possibly go to sleep this time?" , "Twelve, perhaps" , "'It came upon the . . . . . . . . clear' (carol)" , "The moment when the date changes" , "time of transition" .)