zone time
noun
: standard time applied at sea in which the surface of the globe is divided into 24 zones of 15° or one hour each, the 0 zone extends 7¹/₂° east and west of the meridian of Greenwich, and the zones are designated by the number of hours that must be applied to the local time to obtain Greenwich Mean Time
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“Zone time.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/zone%20time. Accessed 28 Nov. 2024.
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