The giant ball that traditionally drops as part of New York's new year celebrations will have a new kaleidoscope design this year.
Organisers have been giving it a test run by throwing a switch that illuminates 32,256 lights embedded in 2,688 Waterford crystals.
At 6pm local time (11pm UK time) the ball will be raised to the top of a 130-foot pole at 43rd Street and and 7th Avenue in Times Square, and then lowered to usher in the new year.
More top news
The death toll following the collapse of a six-storey building in Nairobi rises to 10 as fears grow for those still trapped in the rubble
Springwatch presenter Chris Packham describes his battle with depression as "great, hopeless vacuum".
A newly promoted police officer caused a sensation with local women on Facebook