UTC+09:00 explained

UTC+09:00 is an identifier for a time offset from UTC of +09:00.

During the Japanese occupations of British Borneo, Burma, Hong Kong, Dutch East Indies, Malaya, Philippines, Singapore, and French Indochina, it was used as a common time with Tokyo until the fall of the Empire of Japan.

As standard time (year-round)

Principal cities: Tokyo, Osaka, Nagoya, Fukuoka, Yokohama, Sapporo, Hiroshima, Kyoto, Seoul, Busan, Daegu, Gwangju, Ulsan, Incheon, Pyeongyang, Yakutsk, Koror, Dili, Jayapura, Ambon

North Asia

• Russia – Yakutsk Time^[1]
  • Far Eastern Federal District
    • Amur Oblast, Sakha Republic (western part; west of the Lena River as well as territories adjacent to the Lena on the eastern side)^[2]
    • Zabaykalsky Krai

East Asia

• Japan – Japan Standard Time
• North Korea – Korea Standard Time
• South Korea – Korea Standard Time

Oceania

Micronesia

• Palau – Time in Palau

Southeast Asia

• East Timor – Time in East Timor
• Indonesia – Eastern Indonesia Time^{[3] [4]}
  • Eastern zone, including:
    • Maluku Islands
      • Maluku
      • North Maluku
    • Western New Guinea
      • • • • • Papua West Papua
      • Central Papua
      • South Papua
      • Southwest Papua
      • Highland Papua

Discrepancies between official UTC+09:00 and geographical UTC+09:00

Areas in UTC+09:00 longitudes using other time zones

This concerns areas within 127°30′ E and 142°30′ E longitude.

China

• Parts of Northeast China, including eastern half of Heilongjiang Province and Yanbian Korean Autonomous Prefecture in Jilin Province, where is used.

Australia

• The easternmost parts of Western Australia where UTC+08:00 is used, Eucla and nearby areas where (unofficial) is used.
• The Northern Territory, where is used, and South Australia and Broken Hill where UTC+09:30 and DST are used, respectively, despite the borders of the territory and state fitting perfectly within the ideal meridians of UTC+09:00.
• The western parts of Queensland where is used, and westernmost parts of Victoria and New South Wales where UTC+10:00 and in summer time, is used.

Federated States of Micronesia

• Parts of Federated States of Micronesia, including western parts of Yap State, where UTC+10:00 is used.

Papua New Guinea

• The very westernmost parts of Papua New Guinea, where UTC+10:00 is used.

Russia

• Parts of Russia, including Jewish Autonomous Oblast, Primorsky Krai, central part of Sakha, and most of Khabarovsk Krai where UTC+10:00 is used, and westernmost parts of eastern Sakha Republic and Sakhalin Island, where UTC+11:00 is used.

Areas outside UTC+09:00 longitudes using UTC+09:00 time

Areas between 97°30′ E and 112°30′ E ("physical" UTC+07:00)

• Russia
  • A westernmost part of Sakha Republic, including the urban localities Aykhal and Udachny

Areas between 112°30′ E and 127°30′ E ("physical" UTC+08:00)

• Russia
  • Zabaykalsky Krai
  • Most of western Sakha Republic
• East Timor
• Indonesia
  • The western islands in the provinces of Maluku and North Maluku (from south to north):
    • Liran Island
    • Wetar Island
    • Kisar Island
    • Ambelau Island
    • Buru Island
    • Sanana Island
    • Mangole Island
    • Taliabu and surrounding islands
• Japan
  • Parts of Okinawa Prefecture:
    • Sakishima Islands
      • Yaeyama Islands
      • Miyako Islands
    • Okinawa Islands
      • Kume Island
      • Aguni Islands
      • The western parts of Kerama Islands
• North Korea
  • The western parts of Korea, including the capital city, Pyongyang
• South Korea
  • The western parts of Korea, including the capital city, Seoul

Areas between 142°30′ E and 157°30′ E ("physical" UTC+10:00)

• Japan
  • The eastern parts of Hokkaido, including Obihiro, Kushiro, and Nemuro
  • Minami-Tori-shima in Ogasawara municipality
• Russia
  • • • • • • • New Siberian Islands Novaya Sibir Faddeyevsky Island
          • A smaller part of Kotelny Island The eastern part of Great Lyakhovsky Island

See also

• Time in Russia
• Time in North Korea
• Time in South Korea
• Time in Indonesia

Notes and References

1. Web site: Russia Time Zones - Russia Current Times . TimeTemperature.com. 14 July 2012.
2. Web site: Sakha – Western, Russia Time Zone. TimeTemperature.com. 25 March 2018.
3. Web site: Indonesia Time Zones – Indonesia Current Time. TimeTemperature.com. 27 October 2012.
4. Web site: Provinces of Indonesia. Gwlliam Law. Statoids. 27 October 2012.