No matter where in the world you live, New Year's Eve is a time to celebrate!
New Year's Eve Fireworks light up the sky above Sydney.
Thousands gathered there at 11am as multi-coloured fireworks exploded across the city skyline at midnight.
Pacific islands including Samoa, Tonga and Kiribati entered 2017 at 10:00 GMT, followed an hour later by Auckland, where fireworks erupted from the 328m (1,080ft) tall Sky Tower in the city centre.
From Sydney to Hong Kong, celebrations have begun around the world to bid farewell to a tumultuous 2016 and welcome the New Year.
Celebrations around the world to welcome in 2017 are being held amid heightened security in the wake of the deadly terror attacks in Berlin and Nice.
Police said there were no significant issues or incidents reported at any of the main events and they largely dealt with minor disorder incidents, liquor ban breaches and intoxication.
While you're watching, see if you can identify which portions of the fireworks show were inspired by the late David Bowie, Gene Wilder and Prince.
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Vale New Year's Eve Fireworks will be set off from the top of the Vale Butte at 7 p.m. Saturday, weather permitting.
This includes "Happy New Year" or "Happy 2017", or any combination of these words.
Fireworks explode over the Sydney Opera House and Harbour Bridge as Australia's largest city ushers in the New Year, January 1, 2016.
An extra 2,000 police officers have been drafted in to the city while buses were used to close off some pedestrian areas amid fears about a repeat of this year's extremist atrocities in Germany and France. The line will open on New Year's Eve at 6 p.m. and stay open until 3 a.m.
As usual. there will be a heavy police presence across the city.
"As a outcome, we are confident that there are no current or specific threats to New Year's Eve", she added.
With NSW crime statistics showing New Year's Eve is the worst night of the year for violent offences, police urged people to drink in moderation and look after their friends.
This year, a "leap second" is being added to the end of the year to compensate for a slight slowing of the Earth's rotation.