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Thread: What does a Z suffix to a flight number mean?
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Old Mar 27, 2006 | 4:53 am
  #13  
Roger
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Originally Posted by Dave Noble
It's not actually equivalent; they are different. UTC is based on atomic decay whilst GMT is based on apparant motion of the sun through the Prime Meridian at Greenwich

Dave
Er yes, Dave, but just between ourselves, what's the difference in practice ?
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