How do you use the positioning method that uses a clock to indicate the direction in the military?

That is, place the watch horizontally in front of you and point the direction of 12 o'clock straight ahead. 12 o'clock is the front, 6 o'clock is the rear, 9 o'clock is the left, and 3 o'clock is the right.

For example, the direction of 11 o'clock is the direction of the point directly in front of you to the left.

This is the use of a watch in military topography to determine the bearing, and the specific method is as follows:

The earth rotates 360 degrees in 24 hours and 15 degrees in an hour, and the hour hand of a watch always rotates twice as fast as the sun. At 6 o'clock in the morning, the sun is in the east, and the shadow points to the west, at this time, the hour hand on the watch points to the sun, and the "12" on the dial points to the west, if the dial rotates 90 degrees, it is half folded at 6 o'clock, so that the "3" on the dial is facing the sun, and the "12" is pointing to the north; At 12 noon, the sun is in the south, and the 12 is halved so that the "6" on the dial is facing the sun, and the "12" still refers to the north (fig. 6).

According to this method, the direction is determined, taking into account the local time difference. Beijing time should be converted to local time. Based on the 120th parallel of east longitude, Beijing time is added by one hour for every 15 degrees of longitude to the east, and Beijing time is subtracted by one hour for every 15 degrees to the west.

For example, if the geographical coordinates of Urumqi are 87 degrees 40 minutes east longitude, then (120° 87°) 15° 2 hours and 9 minutes, and Beijing time minus 2 hours and 9 minutes, is the local time of Urumqi.

The above two methods cannot be used in the area south of the Tropic of Cancer (23 degrees 27 minutes north latitude) in Chiayi, Taiwan, Nanao Island, northeast of Shantou, Guangdong, Wuzhou City, Guangxi, and Gejiu City in Yunnan.

By the way, we know that the Earth and the Sun move 15° relative to each other during the rotation of the Earth, and we can roughly determine the direction with a watch and the Sun. Conversely, we can also determine the approximate time with a compass and the sun. To do this, use a compass to orient the sun north, and divide the reading of the sun's bearing by 15.

In China, Beijing time is the standard, Beijing is on the east longitude 120 ° line, and other regions should be corrected according to the longitude difference, that is, the correct solar time.

Remember the mantra: the hour is half a pair of suns, and twelve refers to the north.

Also remember to be local time.

Centered on your position, 12 o'clock in front of you, 6 o'clock in the rear, 9 o'clock in the left-hand direction, and 3 o'clock in the right hand.

Just as due north 12 due south 6 west 9 east 3 when talking to your companion he will judge by your position or you can say: what time is your hour.

Normally, the sun is in the east at 6 a.m., south at 12 noon, and west at 18 p.m. In the field, as long as there is a watch and there is the sun during the day, you can take the watch off and put it on the palm of your hand, and align the scale of the watch with the sun after the time is halved, and dial 12 refers to the north. For example:

It was 14 o'clock and you had to look for directions, and the time was halved to 7 o'clock. This should be pointed to the sun on the dial with the scale 7 on the dial, and 12 on the dial refers to the north. To be more precise, you can use a thin, straight needle or twig to stand on the point where the hour is halved and slowly turn the clock so that the shadow of the needle passes through the center of the dial.

At this time, the center of the dial and the 12-scale extension direction is north.

The first method is to point the hour hand (short hand) of the watch at the sun, and then the hour hand and the "12 o'clock" (the line connecting with the center of the watch) on the watch form an angle, and the angle bisector of the angle points to the direction of "due south". This applies at any time of the year (all year round, in the morning or in the afternoon).

Needless to say at 2 o'clock in the afternoon, the hour hand coincides with "12", and the angle is "0" degrees, and the direction of the hour hand must be "south". As for the minute hand, don't bother with it. When using this method, it is necessary to ensure that the timing time of the watch should be accurate, and it does not matter if there is a little error, but the difference should not be too large.

The second method: divide the time (24-hour system) by 2, and then divide by 2 by the hour scale (e.g. 2 o'clock in the afternoon is 14 o'clock, divide by 2 is 7 o'clock, and then use the 7 o'clock scale scale) to align the direction of the sun, the 12 o'clock hour scale (that is, the direction of the band) at this time refers to the direction of the north, and the 6 o'clock scale refers to the south.

A more convenient and concise method can be used: in the Northern Hemisphere, the time is aligned in the direction of the sun, and the midline of the angle between the two o'clock scale and the hour hand is due south. In the Southern Hemisphere, the 2 o'clock scale is aligned with the direction of the sun, and the midline of the angle between the 2 o'clock scale and the hour hand is due south.

Remember the mantra: the hour is half a pair of suns, and two refers to the north. Be careful to remember the exact time in your local area.

I don't understand this!! You can also tell the direction by looking at the position of the sun.

There is no fixed bearing. Just set a front, and the front is 12 o'clock.