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- Overview
- Adjusting a Compass for Declination
- Finding True North Without a Compass
Did you know that most compasses don't actually point to the North Pole? It's true! In fact, most compasses point in the direction of
, a spot in the Arctic that is near to (but not the same as) the North Pole. In casual, everyday situations, this minor difference is often ignored, but if you're seriously attempting to navigate in the wilderness, it can present problems. Fortunately, there are a variety of ways to find
Find your local declination from the NGDC.
One of the things that can make the difference between true north and magnetic north so difficult for navigators is that the effect on compasses can change over time. This phenomenon is called declination — as the earth's magnetic field fluctuates, the number of degrees by which a compass will be "off" from true north will shift accordingly. Thus, to accurately adjust your compass to account for this effect, you'll need a recent declination value for your location.
Luckily, the National Geophysical Data Center (NGDC) keeps up-to date records of global declination values. At the NGDC website, you can enter your current location to receive the most recent declination value available for your area.
Alternatively, find your declination from a map.
Use the motion of the sun.
If you don't have a compass, don't worry — it's still possible to find true north by using natural clues. For instance, because the sun rises in the East and sets in the west, it's possible to use this information to get a rough sense for the direction of north. Just after sunrise, keep the sun on your right to face north — just before sunset, keep the sun on your left. At noon, the sun will be directly south, so face away from it to find north.
One way to get a "north" reading that's a little more accurate is to use a stick as a sort of sundial. Plant a stick or pole that's a few feet high in the ground and mark the tip of its shadow on the ground. Wait about 15 minutes, then mark its new location. Stand with your left foot on the first mark and your right foot on the second. You will be facing more or less towards true north regardless of the declination where you are.
One handy trick for finding true north involves using the hands of a non-digital watch. To start, remove your watch and hold it in your hand with the hour hand facing forward. Turn your body so that the hour hand points toward the sun. Find the midway point between your hour hand and the 12 o'clock mark at the top of the watch. This will point along the north-south axis.
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7 de dic. de 2023 · Where Is North? Answering the questions "Where is North?" and "Where is South?" is pretty easy when you know what to do. I'm going to show you how to find your direction no matter where you are on the planet and no matter whether it's day or night. Here are five simple techniques you can use that don't require a shop-bought compass.
9 de dic. de 2022 · 1. Locate the Big Dipper constellation. This constellation, also known as Ursa Major, is the key to finding the North Star (Polaris), the star that shows you where true north is in the Northern Hemisphere. This is a large constellation, and finding it on a clear night is easy.
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Users will need the full version of Photoshop to achieve the results seen on Finding North. What is the difference between the monthly, semi-annual, and annual memberships? The two main differences are content and cost.
29 de may. de 2015 · 5 ways to find north without a compass. So you’ve gone on walkabout and got quite seriously lost. You have a map but you don’t have a compass and your phone has died. You look on the map and see that in the north east of the national park there is a village, where you can find food and shelter.
