I had vague memories of people doing this for the millennium and MIL mentioned it in passing just the other day brining it back into my mind. Google tells me it originated in Russia after the revolution. Of this people who keep their trees up for NY do you redecorate it?
If I’ve been going back to work on the 2nd Jan I have denuded the tree but kept the lights on for NYE so I had less to take down on NYD but have never redecorated it before.