Stammtisch / Fixing the dates (Duesseldorf)

Dear everyone
In the Events in Dusseldorf chat the option of a Stammtisch was discussed.
I think in terms of planning things / keeping it regular one might simply ponder on the option of having a fixed Date each month where an Internations event is held, such as 2nd Saturday of the month or similar.
It can be alternated between Dusseldorf and Cologne, with the place to be determined. Then for starters people can just register and put it into their calendars, and even though some of the spontaneity gets lost, it makes things a lot more plannable.

What do you think ?
Christian