Kiribati changed its time zone in 1994 so its entire territory could share the same calendar date.
Kiribati consists of islands spread across a huge area of the central Pacific Ocean. Before the change, the International Date Line separated parts of the country, meaning its eastern islands were nearly a day behind its western islands. In 1994, Kiribati moved the date line around its eastern island groups by changing their time zones.
The adjustment meant the Line Islands, including Kiritimati, would be among the first inhabited places to enter each new calendar day. That geographic position later made Kiritimati a prominent subject in New Year's Eve coverage. The country also gained a practical advantage: its islands could conduct government and commercial activities on the same date.
Kiribati is often confused with Samoa in discussions of date-line changes. Samoa moved west across the date line in 2011, while Kiribati's major shift occurred in 1994. Both cases show that time zones are political and administrative choices as well as geographic conventions.