The most common and most likely answer to this crossword clue is the 9 letter word HEREAFTER
I've seen this crossword clue in The Times
H
E
R
E
A
F
T
E
R
More clues leading to the result HEREAFTER
- Woman consumer stopped by force some time later
- Man gets support packing in drug from now on
- In future try speaking about . . . .
- Fee rather bad — when to expect proper reward?!
- In future, Helium energy may be conserved in a beam
- From now on it's heaven
- ‘Free Earth’ anyhow, from now on
- What makes that man beam about end of scheme – future possibilities?
Buddy explains!

The straight part
We know that "some time later" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case some time later = hereafter.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 HEREAFTER mean?
HEREAFTER noun- A future existence or state.
- Existence after death.
- Future.
- In time to come; in some future time or state.
- From now on.
- Sequentially after this point (in time, in the writing constituting a document, in the movement along a path, etc.)