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@REPLYADDR Kevin Alfred Strom
<kevin.strom@revilo-oliver.com>
@REPLYTO 2:5075/128 Kevin Alfred Strom
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On 9/18/2023 7:32 AM, Will Peters wrote:
> I am trying to determine the longest straight line worldwide distance
> from my locale. Is there a way to find it and/or an appropriate online
> calculator? Thanks.
The farthest great circle distance possible on Earth is approximately
24,900 miles to the antipode of your location. If you consider it
legitimate by your definition of "longest straight line worldwide
distance from my locale," you could continue the great circle line all
the way back to your location (or one inch short your location, say) and
then the greatest possible distance would be about 49,800 miles.
See
https://en.wikipedia.org/wiki/Antipodes for further information.
A bizarre characteristic of antipodes is that there are an infinity of
great circle paths (all the same length) that lead to your antipode, and
any compass direction you face will lead to such a path. In contrast,
for all other points on Earth there is only one shortest (and one
longest) great circle path and to face said path you must face in one
precise compass direction only.
With all good wishes,
Kevin, WB4AIO.
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