Greetings, Kinnies!
New Community Manager, Frelorn, has released Turbine's Schedule for Fall and Winter. Please Note that this is Only Tentative. I will post it on the Calendar as is, but bear in mind that this schedule is subject to change.
An interesting observation: If Turbine stays with this schedule, it appears that Hobnanigans will be scheduled on the first weekend of each month. If one wishes to participate, or avoid the event altogether, then this schedule would make it easier to plan for it.
https://www.lotro.com/forums/showthread.php?556325-Official-Fall-Winter-Time-Events-%28Tentative%29
Enjoy!
~Lerillos