[tz] 'date -u' should say "UTC", not "GMT"

Tony Finch dot at dotat.at
Wed Jun 25 11:54:57 UTC 2014

Paul Eggert <eggert at cs.ucla.edu> wrote:
> Technically, GMT can refer to either a civil day (day starts at
> midnight) or an astronomical day (day starts at noon), and UT avoids
> this twelve-hour ambiguity by standardizing on the civil day.  Until
> 1952 the US Naval Observatory attempted to resolve the ambiguity by
> using the term "Greenwich Civil Time" (GCT) for civil-day GMT but that
> terminology did not catch on widely (it wasn't used in Britain), whereas
> UT has.

Britain (the RGO) switched from the astronomical to the civil meaning of
GMT in 1925. http://www.apparent-wind.com/gmt-explained.html

f.anthony.n.finch  <dot at dotat.at>  http://dotat.at/
Irish Sea: Southeast 4 or 5. Slight. Occasional rain. Moderate or good.

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