Clue: At unspecified time, not enough to raise capital? (3,3)
Answer: ONE DAY
Explanation: At unspecified time, not enough to raise capital? (3,3)
Puzzling: the best I can suggest is a reversal ('to raise' in a down light) of Y (which seems to be a non-standard IVR for Yemen) plus ADEN (its 'capital') plus O (zero, 'not enough'). Better ideas are welcome. *Wrong capital, wrong idea: no wordplay, but a second cryptic definition; see cryptor @1.