UTC−10:00 explained

UTC−10:00 is an identifier for a time offset from UTC of −10:00. This time is used in Hawaii, Alaska, French Polynesia, and the Cook Islands.^[1]

As standard time (year-round)

Principal cities: Honolulu, Avarua, Papeete, Fa'a'ā

Oceania

Pacific Ocean

Polynesia

• France
  • French Polynesia
    • Society Islands
      • Leeward Islands
      • Windward Islands
    • Tuamotus
      • Disappointment Islands
      • Duke of Gloucester Islands
      • Far East Tuamotu Group
      • Hao Group
      • Hikeru Group
      • King George Islands
      • Palliser Islands
      • Raeffsky Islands
    • Gambier Islands
      • Outer Gambier Group
      • Acteon Group
    • Austral Islands
      • Tupua'i Islands
      • Bass Islands
• New Zealand
  • Cook Islands
• United States (Hawaii–Aleutian Time Zone)
  • Hawaii
  • United States Minor Outlying Islands
    • Johnston Atoll

As standard time (Northern Hemisphere winter)

North America

• United States
  • Alaska
    • Aleutian Islands west of 169.30°W
      • Andreanof Islands
      • Islands of Four Mountains
      • Near Islands
      • Rat Islands

Historical changes

• Kiribati
  • Line Islands – including Kiritimati (Christmas Island) advanced 24 hours (to) to the eastern hemisphere side of the International Date Line by skipping December 31, 1994.
• Samoa – Time in Samoa advanced 24 hours (to UTC+14:00) to the eastern hemisphere side of the International Date Line by skipping December 30, 2011.

Notes and References

1. Web site: Time Zone Abbreviations: CKT. 2015-02-16. 2019-12-16. https://web.archive.org/web/20191216035658/https://www.worldtimezone.com/wtz-names/wtz-ckt.htmlWorld. dead.