Greenwich Mean Time
From ARRSEpedia
Greenwich is the centre of the known universe and thus appends its name to time itself. The British invented time. Feckin' match that! Forget all that namby pamby Eastern Mountain Latte with Chocolate Time bollocks that the spams use. There can be only one... until we ourselves start fucking it up with daylight saving bullshit that's largely obsolete. GMT is civvy speak for ZULU Time.
