Samoa skipped December 30, 2011, when it moved west across the International Date Line.
Before the change, Samoa was on the eastern side of the International Date Line and was one of the last places to enter a new calendar day. At midnight at the end of December 29, 2011, the country advanced its clocks by 24 hours, making the next calendar date December 31.
The government said the move better aligned Samoa’s working week and business relationships with Australia and New Zealand, which were important economic partners. The change also altered Samoa’s position relative to American Samoa, which remained on the opposite side of the date line.
Samoa therefore had no local calendar date called December 30, 2011. This was a time-zone and calendar adjustment, not a physical change in the length of the day. The episode is often mentioned in discussions of unusual New Year and date-line celebrations.