The Guild Leaders Summit Meeting takes place the first sunday of every month. It's location varies within the Hyborian lands, and many guild leaders and ambassadors spend weeks travelling to participate in them. It is an open parles forum where wars are set aside and gives leaders a chance to discuss issues face to face in an environment that would not otherwise be available. It is also used to notify leaders of events that their guilds may be interested in participating in.
Information is kept up to date at www.cimmerianleaders.com. If you are a guild leader and do not have the information to get into it, please contact Biggs ingame.