The Reaping Festival itself will happen tomorrow night (Halloween night) starting at around 7-8 PM EDT.
We realize that it's Halloween and a lot of people have family or social commitments, so we'll see how many people can attend (post here if you can) to gauge whether it needs to be moved. Our thought was that since it's a Monday evening people probably won't be out for as many late parties, and we picked a later time slot to account for any trick or treating players might have to do with their kids. If fewer than 8 people can make it, we'll more than likely reschedule.
It should be a fun event, but don't feel bad if you're gonna miss out... there's always next year, and we will be regularly having seasonal events and ingame holidays, with events and plots to go along with them, so stay tuned!