Personally I hope that they do it every year on Christmas Day.
Because we all know that JWs enjoy the "Pagan Holidays" as much as everyone else does apart from they don't decorate and give presents.
Actually lots do give presents - a day or so later to keep up this facade of "not celebrating". And virtually all have big family gatherings etc.
Totally hypocritical.
I think the WT should organise special meetings on Christmas Day and Boxing Day and insist everyone turns up!
Extra Field Service too!!