Just hang out in #planeshift-events if you\'re on IRC. The warning is generally going to be somewhere from 30 minutes to 3 hours in advance of these events (these are \"small\" events). Once things get moving, these small events will have no forum warning and will simply happen to people online.
Big events, once we get there, will have anywhere from a few days to a few weeks notice, depending on size.
EDIT: New role-play event! Be outside Harnquist\'s in 15 minutes if you want to participate. (This is intentionally short notice. The trend is less and less notice... Eventually there won\'t be any notice and you\'ll need to be in-game in the right place at the right time. Major events, as I said, will have a lot more notice). This is again first-come, first-served, taking around 10 people max.
EDIT: And... event canceled... due to server-crashes... sadly.