Samoa has decided that it’s easier to be three hours ahead of New Zealand than 21 hours behind it. Hence, they’re jumping the International Dateline:
On Samoa’s side of this imaginary line that runs from pole to pole, it is Tuesday. On the other side, it is already Wednesday. And this makes it tricky to communicate with its key neighbours Australia and New Zealand, a day ahead on the other side.
…
Samoa will lose a day as it jumps straight from Thursday to Saturday. Any residents with a birthday on Friday 30 December will have to celebrate a day early, or a day late, as that date will not exist in their country.
One-a-Day Calendars and Rebecca Black hardest hit.
Blog of the Nightfly 
What’d they say?