The most common and most likely answer to this crossword clue is the 9 letter word AFTERNOON
I've seen this crossword clue in The Times
A
F
T
E
R
N
O
O
N
More clues leading to the result AFTERNOON
- PM is more behind exploiting notion it turned out
- When one’s ahead of everybody, almost?
- How no-one concludes part of the day
- Greeting a female diver naked?
- One on raft floating around much of day
- Some hours which minutes on piano might stretch into?
- PM of old drafted in following refusal from Brussels
- RAF note no flying between lunch and evening
- PM behind head of state about following up denial
- A loud bird gets egg on time
Buddy explains!

The straight part
We know that "Some hours" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case some hours = afternoon.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does AFTERNOON mean?
AFTERNOON noun- The part of the day from noon or lunchtime until sunset, evening, or suppertime or 6pm.
- The later part of anything, often with implications of decline.
- A party or social event held in the afternoon.
- (more often in the plural) In the afternoon.
- Clipping of good afternoon.