This year's event on the Global Day of Action on Climate Change takes place from 1pm this Saturday 5 December in Bank Square (in behind the Belfast city centre Primark and Tesco Metro, beside Kelly's Cellars pub and the proposed Bob Marley Square).
There will be an outdoor concert, organised by organised by Stop Climate Chaos Northern Ireland. Confirmed acts include folk singer Juliet Turner, violinist/composer Ruby Colley, singer/songwriter Ken Haddock, multi-cultural music collective Beyond Skin, all compered by Joe Lindsay.
There's also a "mass action" Mexican wave ...
"which will involve everyone in the crowd holding up something blue, like a painted placard or a piece of cloth, to form a vast undulating Wave of colour, which will represent both the rising sea levels caused by climate change, and the rising tide of support for a fair and robust global deal on reducing carbon emissions."
If you're coming along, you're encouraged dress blue or bring along something blue to hold aloft though the organisers promise to have "a few blue placards available on the day for those without a prop". There will be also face-painters, jugglers and stilt-walkers. Facebook has up-to-date information.
Last year on a Saturday around now, there was a particularly cold gathering on the steps outside St Anne's Cathedral as part of the Global Day of Action on Climate Change. After a couple of short speeches by Jim Wells (DUP MLA), Bairbre de Brún (SF MEP) and Tim Magowan (Tearfund), bells of all shapes and sizes were rung - along with church bells from across Northern Ireland - "to call on world leaders gathering in Poznan, Poland to make bold decisions on cutting global carbon emissions". Abandoning campanology, there'll be a different kind of ringing in our ears this year!