UTC+12:00 is an identifier for a time offset from UTC of +12:00.

As standard time (year-round)

Principal cities: Anadyr, Petropavlovsk-Kamchatsky, Mata Utu, Funafuti, Majuro, Yaren, South Tarawa on Tarawa

North Asia

Oceania

Pacific Ocean

Polynesia

Micronesia

Melanesia

As standard time (Southern Hemisphere winter)

Principal cities: Wellington, Auckland, Suva

Oceania

Australasia

Antarctica

As daylight saving time (Southern Hemisphere summer)

Principal towns: Burnt Pine, Kingston

Oceania

Discrepancies between official UTC+12:00 and geographical UTC+12:00

Areas in UTC+12:00 longitudes using other time zones

Using UTC-10:00

Areas outside UTC+12:00 longitudes using UTC+12:00 time

Areas between 157°30′ E and 172°30′ E ("Physical" UTC+11:00)

Areas between 180° and 157°30′ W ("Physical" UTC-12:00 and UTC-11:00)

Historical changes

Kwajalein Atoll, in the Marshall Islands, advanced 24 hours to the Eastern Hemisphere side of the International Date Line by skipping August 21, 1993.