Most of the time compasses don’t actually point precisely towards the North Pole. Learn more: what is the Prime Meridian - and why is it in Greenwich? What this means is, if you have a compass and are standing at the Prime Meridian outside the Royal Observatory, your compass is going to point to true north. The British Geological Survey has informed us that, at some point in September 2019, ‘true north’ and ‘magnetic north’ are set to align here in Greenwich for the first time in over 360 years. What is happening to compasses at the Royal Observatory? But what does this mean - and haven't compasses always pointed 'north'?Įrika Jones, curator of Navigation at Royal Museums Greenwich, helped explain this rare occurrence, and the difference between true and magnetic north. In September 2019, for the first time in over 360 years, compasses at Greenwich pointed true north.
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