Outdoor survival knowledge: how to look at the moon and tell the direction when you get lost
It is much easier to find the moon than to identify the stars, and it is also much easier to navigate by the stars. For the earth, the moon is unique and easier to identify than the stars. In fact, it is not difficult to navigate through the moon. As long as we know the change, time and location of the moon phase, we can calculate the correct direction.
Outdoor survival knowledge
The laws of the moon's motion:
1, north of the Tropic of Cancer, the sun and the moon always rise and set in the southern sky. Like the sun, the moon turns westward 15 degrees every hour on average.
2. The phase change of the moon, the date of the lunar calendar, the time of observing the moon and the orientation of the moon are relatively certain.
The moon rises 48-50 minutes later than the day before.
Knowing the above three points, we can determine the direction according to the moon phase and the time of appearance, and vice versa. According to the phase of the moon and the position where it appears, the time can also be inferred.
There is a simple formula for judging the direction according to the moon phase: upper west and lower east.
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first quarter moon
Around the eighth day of the eighth lunar month, when the moon is bright and dark? It's dark in the east and bright in the west. Facing the moon, it shows black on the left and bright on the right. It looks like a string is on it, so it's called winding.
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last quarter
Around the 23rd day of the twelfth lunar month, the moon shines while it is dark? The west is dark and the east is bright. Facing the moon means that the right side is black and the left side is bright. It seems that the chord is below, so it is called the lower chord.
If you need to know the relationship between the moon and azimuth at any time and place, you need to know the period of the moon phase:
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Cycle of moon phase change:
Observing the change of the moon phase should be based on the lunar calendar date. The approximate time of the moon phase is: the first day (new moon), about the fourth day of the month, about the eighth day of the first quarter, about the twelfth day of the convex month (the first half of the month), about the fifteenth day of the full moon (the second half of the month), about the eighteenth day of the convex month (the second half of the month), about the 22nd day of the first quarter, and about the 27th and 28th day of the second quarter. It takes an average of 29.53 days for the moon to move from the new moon position to return to the new moon position again, which means that the average change period of the moon phase is 29.53 days. See the cycle? .
New moon (new moon):
On the first day of each month in the lunar calendar, when the moon moves between the sun and the earth, the dark side of the moon faces the earth and people can't see it. Is this time called the moon phase? Crescent moon? Or? Shuo? . At the new moon, the moon rises and sets with the sun, and it is due to the south at noon, but there is no moon at this time.
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waning moon
Around the fourth day of the lunar calendar, after the new moon, the moon gradually moved out of the area between the earth and the sun. At this time, we began to see that a small part of the moon was illuminated into curved slices. What is the name of the moon phase at this time? Canyue? . This kind? Canyue? You can see it at low altitude in the west when it is just dark. The new moon bends to the west and soon disappears into the western sky.
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First quarter moon:
In July and August of the lunar calendar, the moon moved 90 degrees from the earth to the east. Horn. At this time, we can see the bright half of the west of the moon. What is the name of the moon phase at this time? First quarter moon? . /kloc-appears in the southern sky around 0/8, and the arc is westward. The first quarter moon can only be seen in the first half of the night, and then disappears in the west at midnight.
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Convex moon (first half):
Around the twelfth lunar month, after the first winding, the moon becomes round day by day, and we can see most of the bright hemispheres of the moon. What is the name of the moon phase at this time? Convex moon? . It appears in the southeast at dusk, southwest at midnight, and the sun rises shortly after sunset.
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Full moon (see):
On the fifteenth and sixteenth day of the lunar calendar, the moon runs across the celestial sphere to the opposite side of the sun. The distance from the sun to the moon is 180? In other words, the earth lies between the sun and the moon. Seen from the earth, all the light of the moon is directed towards the earth. What is the name of the moon phase at this time? Hope? Or? Full moon? . At the full moon, the sun sets from the horizon in the west, the moon rises from the horizon in the east, it is due south at midnight and sets in the morning.
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Convex moon (second half):
Around the 189th lunar month, after the full moon, as the position of the sun and the moon approaches, the moon is getting closer and closer. Thin? Get up. Midnight is located in the southeast. It runs to the southwest horizon at dawn and disappears in the morning light soon after the sun rises.
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First quarter moon:
On the 22nd and 23rd of the lunar calendar, you can see the bright half of the east side of the moon. What is the phase of the moon at this time? First quarter moon? At the end of the first quarter moon, the moon appears on the horizon in the east at midnight, with its bow facing the east, due south in the morning and setting at noon.
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Canyue:
Before and after the 27th and 28th lunar calendar, China used to put down the half moon. Canyue? What's your name? Canyue? . The waning moon appeared in the southeast sky before dawn, with the crescent bow facing east, and disappeared in the southeast sky shortly after the sun rose.
dark
Gloomy originally meant cloudy weather, and later it was used to refer to the last day of each month in the lunar calendar. The lunar phase in March of the lunar calendar is the same as that in the lunar calendar 1 month, rising and setting with the sun, so we can't see it.
We can sum up the relationship between moon phase change, lunar date and appearance orientation:
1, the waning moon is around the fourth day, the moon rises at dusk, the first quarter moon is around the seventh day, the moon rises at noon, the full moon rises at the fifteenth and sunset, the second quarter moon is around the 23rd lunar month, and the moon rises at midnight.
It must be the new moon in the western sky at dusk, the first quarter moon in the southern sky and the full moon in the eastern sky. It is the waning moon that appears in the eastern sky in the morning and the last quarter moon that reaches the southern sky.
3. In the northern hemisphere, the crescent moon with the word C must be the waning moon, and the crescent moon with the word C.
Just like using the sun to navigate, the moon can also use vertical rods to form shadows to judge its direction. If you don't know the time of the full moon on the 15th and 16th of the lunar calendar, you can mark the shadow of the moon with a wooden stick. Of course, this is not necessary. Simply put, we can watch the moon's displacement through the branches. The moon also moves from east to west, and its direction of movement is west.
The discussion about astronomical navigation is over. Astronomical navigation is actually a very practical and reliable navigation method, and people in the wilderness all over the world are using it to find their way home. But until you observe the practice yourself, all this is just a kind of knowledge. Understanding does not mean that you have mastered these methods. Many pictures are taken by cameras, which are different from what your eyes actually see. You must observe and practice more personally. This is not difficult. The sun and the moon rise and set every day. All you need to do is hold your head up.