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The most recently re-introduced time zone is UTC+8:30. North Korea switched from UTC+9 to UTC+8:30 on 15 Aug 2015. The new time zone is known as Pyongyang Time and is abbreviated KPT (KP being the ISO two-letter abbreviation for North Korea). UTC+8:30 had been used in the past by North and South Korea and part of China, but before 2015 it hadn't been used since 1980, when China switched from multiple time zones to one nationwide time zone, UTC+8, also known as Beijing Time or China Standard Time (CNST).

The time zone most recently introduced for the first time is UTC+14 or Line Islands Time (LINT), in 1995. Before 1995, part of Kiribati was on the west side of the International Date Line, in the UTC+12 time zone, and part was on the east side, in the UTC-11 and UTC-10 time zones. In order to have the whole country on the same side of the International Date Line, Kiribati changed Phoenix Islands Time (PHOT) from UTC-11 to UTC+13 and Line Islands Time from UTC-10 to UTC+14 in 1995. Samoa Summer Time (WSDT) and Tonga Summer Time (TOST) are also UTC+14, but they are in use during only part of each year, WSDT from September to April and TOST from November to January.

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8y ago

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