At midnight on 29 December 2011, Samoa officially switched to the west side of the International Date Line. This means its dates are the same as those of NZ, Australia and Asia. Local time is GMT/UTC plus 13 hours. Therefore, when it’s noon in Samoa, it’s 11am the same day in Auckland.
Samoa adopted daylight saving time in 2010. In early October the clocks go forward (to GMT/UTC plus 14 hours), returning to normal in late March.