Who's first to celebrate New Year?
New Year will start at different times in different parts of the world.
When we celebrate New Year at midnight in the UK, in some parts of the world it will still be 2016.
And it will have been 2017 for around half a day in places like New Zealand and Australia!
Want to find out who gets to celebrate first, where's left 'til last and why? Check out Jenny's video.