I am hosting another Halloween event on the server last year, it will be at the same warp (/warp Halloween) on the main server. And it will be more or less the same as last year more or less. Just get a Halloween themed skin for your mc character and join in if you want.
Time? Thursday afternoon (maybe not) or Friday afternoon (slightly more likely).
Where? Stated above.
Who? Anyone.
Why? Well why not?