four o'clock
He gave the astonished man a firm , friendly grip and bade him `` So ` long ! '' at the door . A few minutes later , dressed in his freshest apparel , he hastened out to gulp down a cup of strong coffee at an adjacent café , then headed downtown for the ferry . The hour was just after four o'clock when Garrison stepped from a cab in Hackatack Street , Jersey City , and stood for a moment looking at the red-brick building numbered 937 . It was a shabby , smoke-soiled , neglected dwelling , with signs of life utterly lacking . Made wary by his Central Park experience , Garrison had come there armed with his gun and suspiciously alert . His cabman was instructed to wait .