zero-hour

Updated: June 25, 2025

It was now quite daylight; our aeroplanes were flitting across the sky, diving low to obtain better observation of the enemy, and incidentally getting "strafed" by his anti-aircraft guns which did not interest them in the least. "What time is zero-hour?" I asked. "Twelve-thirty," was the reply.

Geoffrey H. Malins - How I Filmed the War: A Record of the Extraordinary Experiences of the Man Who: Filmed the Great Somme Battles, etc.