My friends and I decide to go bowling this Friday. We decide to call ahead to the bowling alley nearby to reserve our lane at 8 PM on Friday. At Friday 8 PM, we all meet up at the bowling alley and we check in with the worker. He charges us an admission and shoe rental fee. After changing into our new shoes, we head to our lane. The first round took us about 40 minutes to complete. After getting the hang of everything, we complete the second round in only 20 minutes. Everything took us about an hour to complete. At about 9 PM, we decide to leave so we return our shoes and proceed to leave. After saying our goodbye's we go our separate ways. On the way home, I decide that I had a good time bowling so I remind myself to schedule another event very soon. 
Question: When did they go bowling?
8 PM on Friday