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From Wikipedia, the free encyclopedia

Time zone
World map with the time zone highlighted
UTC offset
Current time
11:17, 14 August 2023 UTC+11:30 [refresh]
Central meridian
172.5 degrees E
Date-time group

UTC+11:30 is an identifier for a time offset from UTC of +11:30.


This time zone has been used as standard time in New Zealand and Norfolk Island, but is no longer used as a time zone anywhere.

On November 2, 1868, New Zealand officially adopted a standard time to be observed nationally, and was perhaps the first country to do so. It was based on the longitude 172° 30' East of Greenwich, that was 11 hours 30 minutes ahead of Greenwich Mean Time. This standard was known as New Zealand Mean Time (NZMT).[1] Today this would be around the same zone covered by UTC+11:30. New Zealand changed from NZMT to New Zealand Standard Time (NZST) as UTC+12:00 in 1946 (after using this time zone as a daylight saving time since 1928, including permanent daylight saving from 1941).[2] It was officially changed to 12 hours in advance of UTC in 1946.[3]

Norfolk Island's standard time (NFT) was on UTC+11:30 until 4 October 2015, when it was changed to UTC+11:00.[4]

See also


  1. ^ "Evening Post — 8 April 1929 — OUR TIME". 2011. Retrieved 4 October 2015.
  2. ^ "Daylight Saving History". New Zealand Department of Internal Affairs. Retrieved 4 October 2015.
  3. ^ "Daylight Saving". New Zealand Department of Internal Affairs. Retrieved 4 October 2015.
  4. ^ Hardgrave, Gary (3 September 2015). "Norfolk Island standard time changes 4 October 2015" (Press release). Administrator of Norfolk Island. Retrieved 4 October 2015.
This page was last edited on 22 July 2023, at 12:59
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