[talk-ph] Forbidden city image of the week

maning sambale emmanuel.sambale at gmail.com
Wed Feb 1 01:56:53 GMT 2012


You maybe right according to NOAA'S NGDC website [0], Beijing's
magnetic north declination is ~-3° 6' 17" changing by  -2.0' per year
which is almost the same degree of "tilting" of the Forbidden City.

[0] http://www.ngdc.noaa.gov/geomag-web/#declination

On Tue, Jan 31, 2012 at 10:30 PM, Rally de Leon <ralleon at gmail.com> wrote:
> Maybe it's aligned to a particular Magnetic North at the time of
> construction?? :-)
> On Tuesday, January 31, 2012, maning sambale <emmanuel.sambale at gmail.com>
> wrote:
>> Interesting, i always thought the forbidden city is oriented on a perfect
>> north-south direction.  Any idea why its "tilted" in osm?
>> http://wiki.openstreetmap.org/wiki/File:Forbidden_city_2012-01_cloudmade-fresh.png

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