Today marks the last day for true Samoan and Tokelau time, as tomorrow they will skip a whole day to align their dates with New Zealand.
They will go to sleep tonight on their Thursday, December 29, and wake up on Saturday, December 31 - skipping Friday.
Since 1892, Samoa has lain east of the international dateline, after switching over from the west to align with trading partners the United States and Europe.
But earlier this year, Prime Minister Tuilaepa Sailele Malielegaoi announced the country would be switching back to its original dateline as times had changed.
Neighbouring Tokelau decided to follow suit in October.
"Our trading partners have dramatically changed since and today we do a lot more business with New Zealand and Australia, China and Pacific rim countries such as Singapore," Mr Tuilaepa said in May.
"In doing business with New Zealand and Australia we're losing out on two working days a week. While it's Friday here, it's Saturday in New Zealand and [while] we're at church [on] Sunday, they're already conducting business in Sydney and Brisbane." Work has already started to change maps, charts and atlases to show Samoa on the west side of the international dateline.
A new postage stamp has been launched and will be sold for two years to mark the switch.
The announcement of the change has been met with both positive reaction as well as controversy.
Leaders of the Seventh Day Adventist Church, which observes the Sabbath on Saturday, have declared the church will continue to observe the Sabbath day on what would have been Saturday - therefore observing the Sabbath on Sundays from now on.
One village, Samatau, however, has said it would not be following the rule and would worship on the new Saturday.
The village of Falealupo - located on the eastern tip of the big island of Savaii - has long been known as the last place on earth to see the sun set.
It has therefore been a major tourist attraction for decades, particularly during New Year's Eve celebrations.
Falealupo Beach Fales accommodation - which has the line "where the sun sets" in its logo - will have to make some changes.
Owner Soifua Levi accepted the Government's change.
"I believe that the Government is only trying to better our country."
