UTC+11:30

Former time zone
UTC+11:30
Time zone
World map with the time zone highlighted
UTC offset
UTCUTC+11:30
Current time
06:19, 11 May 2024 UTC+11:30 [refresh]
Central meridian
172.5 degrees E
Date-time group
L*

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

History

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

References

  1. ^ "Evening Post — 8 April 1929 — OUR TIME". paperspast.natlib.govt.nz. 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.
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Coordinated Universal Time (UTC)
UTC offset for standard time and Daylight saving time (DST)

Italics: historical or unofficial
180° to 90°W
  • −12:00
  • −11:00
  • −10:30
  • −10:00
  • −09:30
  • −09:00
  • −08:30
  • −08:00
  • −07:00
90°W to 0°
  • −06:00
  • −05:00
  • −04:30
  • −04:00
  • −03:30
  • −03:00
  • −02:30
  • −02:00
  • −01:00
  • −00:44
  • −00:25:21
0° to 90°E
  • +00:00
  • +00:20
  • +00:30
  • +01:00
  • +01:24
  • +01:30
  • +02:00
  • +02:30
  • +03:00
  • +03:30
  • +04:00
  • +04:30
  • +04:51
  • +05:00
  • +05:30
  • +05:40
  • +05:45
90°E to 180°
  • +06:00
  • +06:30
  • +07:00
  • +07:20
  • +07:30
  • +08:00
  • +08:30
  • +08:45
  • +09:00
  • +09:30
  • +09:45
  • +10:00
  • +10:30
  • +11:00
  • +11:30
180° to 90°W
  • +12:00
  • +12:45
  • +13:00
  • +13:45
  • +14:00
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