Eastern parts of Australia see in the New Year in just under 15 minutes' time.
New Year's Eve celebrations: world welcomes 2018
31 December 2017
The New Year has officially begun, as midnight passed in Samoa, Tonga and Christmas Island/Kiribati, the first places in the world to welcome in 2018.
The last places on Earth to see in the New Year are minor outlying US islands like Baker Island and Howland Island - although these are uninhabited. The last inhabited island is American Samoa which will welcome 2018 when it's 11am in London on January 1.
When major cities will welcome 2018
11.00 GMT Auckland, New Zealand
13:00 GMT Sydney, Australia
16:00 Beijing and Hong Kong
23:00 Paris, Rome and Brussels
05:00 New York
08:00 Los Angeles
In the UK, Storm Dylan is set to bring a wet and windy end to the year, with howling gales in excess of 70mph hitting parts of Ireland and Wales and squally rain bearing down on the UK mainland. Forecasters have warned of severe gusts of up to 80mph.
First country rings in the New Year
Samoa became the first country to celebrate 2018 as midnight struck on the islands.
The most interesting thing about the New Year in Samoa is the fact that one can take an hour's flight to American Samoa, which is on the other side of the dateline, and celebrate the New Year twice, twelve hours later, as it is one of the last places to hit midnight.
Often, Samoans and visitors to the country celebrate with fireworks and traditional juggling and dancing.
People visit from all over the globe in order to be the first to see the New Year.
In 2011, officials in Samoa decided to move from the eastern side of the international date line to the western side, making it the first country to celebrate the New Year instead of the last.
This put the Pacific island nation on the same weekday as its neighbours to the west, including Australia and New Zealand, and was aimed at making trade with the countries easier and boosting the economy.
New Zealand celebrates the new year
Record numbers were expected to show up to New Zealand's new year celebrations as it became one of the first countries to celebrate 2018, at 11am UK time.
In Auckland, revellers were treated to reggae music from local bands at a block party and in Rotorua, there is a free festival featuring local entertainment, fireworks and the headline act Elemeno P. There are quite a few festivals happening across the country - but alcohol has been banned in many parts of New Zealand including Queenstown, Frankton, Arrowtown, Wanaka and Hawea.
This came into effect on Wednesday and will be in place until the 6th.
The alcohol bans are put in place to avoid disruption and danger, but the elements caused some chaos, with a south-westerley wind hitting the beaches and sending towels and umbrellas flying. Police were also forced to deal with escaped sheep.
A local police department tweeted: "Big news coming out of Timaru. Cows were wondering on the road but were mooved off by a motorist. Our unit didn't find cows but did find sheep. Ewe know what that could mean. "
New Year's Eve celebrations: world welcomes 2018*