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    Re: Charting apparent vs standard time
    From: Frank Reed
    Date: 2014 Mar 6, 12:53 -0800

    Peter you wrote:
    "world map showing the difference between apparent and standard time."

    Well, almost. It shows the difference between "local mean time" and "standard time". Apparent time varies by about 15 minutes in either direction from LMT (and no, I can't think of any way to map that in a format like this nor is it really necessary). But comparing LMT with, for example, EST, or any other "standard" time is misleading since most northern countries DO NOT USE standard except for four months out of the year. For the majority of the year, about two-thirds, we use a time zone shifted one zone to the east. Starting in just three days, the states of Indiana and Michigan will be keeping time as if they were located somewhere out in the middle of the Atlantic EAST of Bermuda. This significantly alters the map. The name "standard time" is misleading today. It is not the standard --it is the exception.

    Thanks for the links. The blog article is good, and the comments hit the points that I've described above, too. Most especially, thanks for the link to the flowing data blog: http://flowingdata.com/. It looks quite fascinating, and it's new to me! :)


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