There’s a reasonable analysis here:
http://www.helium.com/items/693796-poetry-analysis-acquainted-with-the-night-by-robert-frost
"Salthouse Docks, Liverpool" and "Night-time" were both Victorian paintings by John Atkinson Grimshaw. I altered the last one a little to fit the format - here’s the original:
http://tinyurl.com/ydvbeov
I have been one acquainted with the night.
I have walked out in rain – and back in rain.
I have outwalked the furthest city light.
I have looked down the saddest city lane.
I have passed by the watchman on his beat
And dropped my eyes, unwilling to explain.
I have stood still and stopped the sound of feet
When far away an interrupted cry
Came over houses from another street,
But not to call me back or say good-bye;
And further still at an unearthly height,
O luminary clock against the sky
Proclaimed the time was neither wrong nor right.
I have been one acquainted with the night.