12 o'clock
On 25th August , 1915 , a Zeppelin flew over the sleeping city , guided by flash lamps from German spies on roofs . It was a night of terror -- a bomb dropped to fall upon the royal palace , missed and injured two women ; a bomb aimed for the Antwerp Bank missed and killed a servant ; but one fell into a hospital and another into a crowd in the city square . Five people were blown to atoms . It must have been an awful night , for it is recorded that the city watchman of Antwerp announced : `` 12 o'clock and all 's hell . '' On September 2nd -LRB- the anniversary of Sedan -RRB- , the Zeppelin came again to give its stab in the dark , but finding it was recognised , retreated . It did not rise higher to get out of danger of the air guns and put up a fight . The German in the air takes few risks .