Answer:
Setting: standing on a roof top
Time period: around the civil war era
Time of day: night
City: Dublin
Country: Ireland
Step-by-step explanation:
"The Sniper" is a short story about a young man living in Dublin, Ireland, around the time of the civil war between the Republic and the free states.
The main character, a skinny young student, is described by the author as the sniper who was standing on a roof when he appeared and then disappeared as the author says, "June twilight faded into night."