I guess it makes more sense if you think of it as "the house should be decorated for the twelve days of christmas" so they go up on Christmas eve (the day before the first day of Christmas) and stay up until the 6th Jan (the day after the last day of Christmas). But they should probably come down ASAP on the 6th, in the same way they should probably go up on the evening of Christmas Eve.
no subject
Date: 2008-01-06 10:09 pm (UTC)