ZEROHOUR

Start time (4,4)

Solution has appeared in 2 crosswords (0 across and 2 down):

• Quick crossword No 16,607 — 2023-07-27 23:00:09
  11D: When an operation is scheduled to start (4,4)
• Quick crossword No 15,661 — 2020-07-16 23:00:58
  4D: Start time (4,4)