Declination calculator - ClubTread Community

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post #1 of (permalink) Old 11-08-2013, 11:03 PM Thread Starter
RGB
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Join Date: Jul 2004
Location: BC
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Default Declination calculator

Useful declination calculator. I'm probably not the only one who forgets to update declination on paper maps and compasses. Surprising how much it changes over time and space.

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

At the moment, for ex., 49 / 122 near Cultus Lake is 16.61° E changing by 0.19° W per year.

Vancouver's declination is 16° 52' 12" E changing by 11.9' W per year.

Victoria's is 16° 42' 58" E changing by 11.3' W per year.

Calgary's is 14° 38' 29" E changing by 12.6' W per year.

Seattle's is 16° 17' 36" E changing by 10.8' W per year.
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post #2 of (permalink) Old 11-09-2013, 01:58 PM
High on the Mountain Top
 
Join Date: Jul 2005
Location: north van, bc, Canada.
Interest: hiking / camping
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I have an iphone app that gives current declination for current area based on phone gps. or can select other areas on world map for current declination anywhere.

though mine says vancovuer is 17.08...
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post #3 of (permalink) Old 11-09-2013, 02:06 PM
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post #4 of (permalink) Old 11-10-2013, 07:56 AM
Headed for the Mountains
 
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Location: Calgary, Alberta, Canada.
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Thank you for posting those links. Good reminder to update one's maps, given those rates of change. Happy Trails
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