We usually start from 6:30 pm onwards. Ends depending what people feel like, which can mean anywhere between 9:30 to 11;00 pm. Our location is at the Olney Manor Park, at the intersection of Georgia Ave and Emory Road.
I do know it is a bit far considering where you are located so I was a but hesitant in offering it lol. Have you tried something like meetup.com to see if there are tennis social groups in your area?