How can I see which teams serve coffee at a specific time?

You have to look at each team to see their meeting time. Tap on their icon and it is shown below their team description, lower left corner. Unfortunately there is no way to filter teams by a specific meeting time. Also some teams are better at serving at their designated time than others. You can use trial and error to find a good club or join one of the many JJ team recruitments sites on Facebook that helps.