Circa
Vivid Sydney 2019 featured “Circa”, a light installation in Sydney. It was installed at Royal Botanic Garden Sydney.
Circa is a twelve-part light sculpture made up of rings that present circannual light levels on earth's surface.
Location
Royal Botanic Garden Sydney, Sydney — open in OpenStreetMap
Programme information from Vivid Sydney. Short excerpt quoted for reference; see the original page for full text, images and credits.