I'm open to conducting some polls to see if there's an optimal day/time when people are available to play. For all we know, the 24-person turnout was because it was a time when people in both Europe and the States could play.
If it's chronically not a good time for some folks who are otherwise interested, we can try rotating times/days, or run more than one event per week as long as there is interest.
If Saturday's a work day for some people, it's likely that Sunday will be as well, and people often have family obligations on Sundays that they might not have on a Saturday.