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Half Hour and 45-Minute Time Zones

While most time zones differ from Coordinated Universal Time (UTC) by a number of full hours, there are also a few time zones with both 30-minute and 45-minute offsets.

Illustration image

Green and yellow areas have offsets of 30 or 45 minutes.

The local time in a time zone is defined by its difference from Coordinated Universal Time (UTC), the world's time standard.

Interactive Time Zone Map

Not Only Whole Hours

A country in the UTC+3 time zone is 3 hours ahead of UTC; in the UTC-8 time zone, clocks are 8 hours behind UTC.

However, some countries and territories use uneven UTC offsets that differ by 30 or 45 minutes from the usual one-hour time zone interval.

Time Zone Names Worldwide

Daylight Saving Time

Regions that use Daylight Saving Time (DST) change the time zone during the DST period. The words "daylight" or "summer" are then usually included in the time zone name.

The areas that don't use DST, remain on their standard time zone all year.

DST Worldwide

India: UTC +5:30

Australian States:

Australia has multiple time zones. Some of them are half-hour and quarter-hour time zones. Not all states and territories use DST.

Northern Territory: UTC +9:30

Eucla: UTC +8:45

South Australia: UTC +9:30 / +10:30

Broken Hill: UTC +9:30 / +10:30

Lord Howe Island: UTC +10:30 / +11:00

Cocos (Keeling) Islands: UTC +06:30

New Zealand, Chatham Islands: UTC +12:45 / +13:45

Canada, Newfoundland: UTC -3:30 / -2:30

Sri Lanka: UTC +5:30

Afghanistan: UTC +4:30

Iran: UTC +3:30 / +4:30

North Korea: UTC +8:30

  • Standard time: North Korea Time
  • Daylight time: None
  • Example city: Pyongyang

Myanmar: UTC +6:30

Venezuela: UTC -4:30

Nepal: UTC +5:45

French Polynesia, Marquesas Islands: UTC -9:30

Topics: Time Zone

Time Zone Map with DST

Time Zone Map


Time Zone Library

  1. What is a Time Zone?
  2. Half Hour & 45 Minute Time Zones
  3. What's the International Date Line?
  4. When Were Time Zones Introduced?
  5. USA Time Zones
  6. UK's Time Zones: GMT and BST
  7. Canada's Time Zones
  8. Australia’s Time Zones
  9. Antarctica's Time Zones

Time Zones Worldwide

Time zones worldwide

Time Zone Tools

Coordinated Universal Time (UTC)


Thursday, November 26, 2015

UTC is the common time standard across the world

More about UTC

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