RSS BotMB to Hacker NewsEnglish · 20 days ago

'Three norths' alignment about to end

www.spatialsource.com.au

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'Three norths' alignment about to end

www.spatialsource.com.au

RSS BotMB to Hacker NewsEnglish · 20 days ago

0

‘Three norths’ alignment about to end - Spatial Source

www.spatialsource.com.au

The rare 'three norths' alignment of true, magnetic and grid north will likely not be seen again for several centuries.

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