At the end of December 2011, Samoa changed its time zone offset from UTC−11 to UTC+13, effectively jumping forward by one day, omitting Friday, 30 December from the local calendar. This also had the effect of changing the shape of the International Date Line, moving it to the east of the territory. This change aimed to help the nation boost its economy in doing business with Australia and New Zealand. Before this change, Samoa was 21 hours behind Sydney, but the change means it is now three hours ahead. The previous time zone, implemented on 4 July 1892, operated in line with American traders based in California. In October 2021, Samoa ceased the daylight saving time.