Something that as soon as it is done becomes decided upon to repeat the next year and years to come. Does not necessarily have to had been done previous years to be defined an instant tradition.

Solarpunk is a movement focused on a positive, ecological vision for a future where technology is used for human-centric and ecocentric purposes. It is a literary, artistic and aesthetic sub-genre and is also closely tied to eco-political activism. Solarpunk narratives have a distinctly positive and utopian foundation in contrast to the often dystopian visions found within other "punk" science fiction genres.

Something that doesn't exist, as traditions take time to develop.