Exactly what conversation do you feel you are missing at night? Conversation at work? Keeping up on the minute by minute postings here? Chatting online?
Trust me when I say there are PLENTY of folks lurking around late at night that would be available to chat or converse with you. Some work late and others just stay up late. Like the internet, the opportunities are nearly endless. If you can better describe what it is you feel you are missing or what you want, I am sure there will be many who will come out to play.