UTC+04:00 explained

UTC+04:00 is an identifier for a time offset from UTC of +04:00. In ISO 8601, the associated time would be written as 2019-02-07T23:28:34+04:00. This time is used in:

As standard time (year-round)

Principal cities: Abu Dhabi, Dubai, Baku, Tbilisi, Yerevan, Samara, Muscat, Port Louis, Victoria, Saint-Denis, Stepanakert

Europe

Eastern Europe

• Russia – Samara Time^{[1] [2] [3]}
  • Southern Federal District
    • Astrakhan Oblast
  • Volga Federal District
    • Samara Oblast
    • Saratov Oblast
    • Udmurtia
    • Ulyanovsk Oblast

South Caucasus

• Armenia – Armenia Time^[4] (used DST in 1981–2012)
• Azerbaijan – Azerbaijan Time (used DST in 1981–2016)
• Georgia – Georgia Time
  • Except Abkhazia and South Ossetia
    • Georgia moved from zone UTC+04:00 to on June 27, 2004,^[5] then back to UTC+04:00 on March 27, 2005.

Asia

Middle East

• Oman – Time in Oman
• United Arab Emirates – United Arab Emirates Standard Time

Africa

• France
  • French Southern and Antarctic Lands
    • Crozet Islands^{[6] [7]}
    • Scattered Islands in the Indian Ocean
      • Glorioso Islands^[8] and Tromelin Island^[9]
  • Réunion^[10]
• Mauritius – Mauritius Time
  • Mauritius tried DST in 2008 but decided not to continue^[11]
• Seychelles – Seychelles Time

Discrepancies between official UTC+04:00 and geographical UTC+04:00

Areas in UTC+04:00 longitudes using other time zones

Using :

• Yemen
  • Socotra, the largest island in the Socotra Archipelago
  • The easternmost part of Al-Mahrah
• Saudi Arabia
  • The easternmost part of Syarqiyah
• Russia
  • Most of Franz Josef Land, Yuzhny Island, and most of Severny Island (with an exception of the very east)
  • Some parts of the Russian mainland (Komi Republic, Nenets Autonomous Okrug, east of Kirov Oblast and Tatarstan)

Using :

• Most parts of Iran

Using :

• Western parts of Afghanistan

Using :

• Turkmenistan
• Kazakhstan
  • Aktobe
  • Kyzylorda
  • Parts of Mangystau, Atyrau, and West Kazakhstan
• Uzbekistan
  • Most parts of the country, including Samarkand
• Pakistan
  • Western parts, including Karachi
• Russia
  • Bashkortostan, Orenburg Oblast, Perm Krai, most parts of the Ural Federal District

Using :

• Kazakhstan
  • Kostanay
  • A smaller parts of Turkistan
  • Western parts of Karaganda, Akmola, and North Kazakhstan

Areas outside UTC+04:00 longitudes using UTC+04:00 time

Areas between 37°30' E and 52°30' E ("physical" UTC+03:00)

• Caucasus region:
  • Georgia, excluding Abkhazia and South Ossetia
  • Armenia
  • Azerbaijan
• Russia, with parts of its territories:
  • Astrakhan, Samara, Saratov and Ulyanovsk (with an exception of the very east)
  • Western half of Udmurtia
• United Arab Emirates
  • The westernmost region of the Emirate of Abu Dhabi
• Seychelles
  • Aldabra Group
    • Cosmoledo Atoll
  • Farquhar Group
• French Southern and Antarctic Lands
  • Crozet Islands

Notes and References

1. Web site: Russia Time Zone Map. WorldTimeZone.com. 22 March 2018.
2. http://www.consultant.ru/document/cons_doc_LAW_114656/b2707989c276b5a188e63bc41e7bcbcc18723de8/ Federal law of 3 June 2011 no. 107-FZ (as amended on 22 December 2020) "On the calculation of time", Article 5. Time zones
3. https://www.timeanddate.com/news/time/russia-volgograd-time-zone-2020.html New Time Zone in Russia's Volgograd Region
4. Web site: Armenia scraps daylight saving time for good. 2012-01-31. 2017-03-20.
5. News: Times are a' changing in Georgia. 2004-06-27. BBC News. 2017-03-20.
6. Web site: Guide Pratique De L'hivernant. Terres Australes et Antarctiques Françaises. 30. fr. 18 August 2012.
7. Web site: Current Times In French Southern and Antarctic Territories.... Time Genie. 18 August 2012.
8. Web site: Current Time In Glorioso Islands, Glorioso Islands.... Time Genie. 18 August 2012.
9. Web site: Current Time In Tromelin Island, Tromelin Island.... Time Genie. 18 August 2012.
10. Web site: World Time Zone Map Section # 19. WorldTimeZone.com. 15 July 2012.
11. Web site: Mauritius will not repeat daylight saving time. 2009-06-05. 2017-03-20.