End of November (adore doing this), tree, lights, garlands, the lot. But take them down on Twelfth Night, as it's unlucky to keep them up after that. Nothing outside though as we don't have the electric connections and all the cats around us would be up on the tree ripping it to bits and electrocuting themselves. We have to watch our Siamese inside, as they like to have a quick wee on anything new!