Hi, Laverne! The December calendar for Epcot is linked
here for your convenience, and at the time of this posting, it only shows park hours, Extra Magic Hours and a tentative entertainment schedule. Of course, online information is subject to change and will probably include more information such as Candlelight Processional dates later in the summer. (Based on past personal experiences, I'm guessing around July.) A press release announcing the narrator schedule for Candlelight Processional is usually sent to the online fan sites, too. So, keep checking online at allears.net, mousesavers.com, stitchkingdom.com or your favorite Disney fan site to find out when your narrator of choice is scheduled to appear.
As a hint, if you have a favorite performer who has been a Candlelight Processional narrator in the past, check his or her website. I took a peek at my personal favorite, Steven Curtis Chapman's site, and he has Disney's Candlelight Processional listed under his dates for December 12,13, 14 and 15. Of course, all entertainment schedules are subject to change, but that it is a "back-door" approach to finding out what you're looking for!
I hope this at least points you in the right direction, Laverne, and I'm sure glad that you love our panel. We sure love answering your questions! Have a wonderful day and a most magical vacation!