On 25 Oct 2010, at 02:19, Warner Losh wrote:
> NASA already uses GMT when they really mean UTC. 

Microsoft use GMT when they mean "clock on the wall time in countries whose 
winter timezone is GMT or UTC, including daylight savings" which is even more 
pernicious.  Hence calendar appointments say  "GMT, London, Lisbon, Edinburgh" 
or whatever it is).  The list of dubious assumptions in there is extensive.   
Lisbon has been on both UTC+0 and UTC+1 in recent years.  They recognise that 
Scotland and England are in some sense different counties while excluding 
Dublin, which definitely is another country.   The UK has only switched the EU 
daylight savings recently.  It would not be surprising were Scotland to either 
operate different daylight savings or a different base timezone or both in the 
lifespan of a software product.  All of these assumptions are wrapped up in 
"GMT".

ian

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