How do you calculate time with warp and weft? How to look at the warp and weft

Time calculations have nothing to do with latitude, just longitude.

If you calculate the difference in local time, from a certain point, 1 hour is added for every 15 degrees to the east, and 4 minutes is added for every 1 minute to the east.

Question: 18 degrees east longitude and 136 degrees east of 118 degrees west longitude. Therefore, it is 136*4 minutes earlier than 118 degrees west longitude, which is 9 hours and 24 minutes. (If the number is large, calculate it yourself.) It can also be like this, the difference of 135 degrees is 9 hours, and the remaining 6 degrees is 24 minutes)

If it is a compute area:

1.It should be calculated by dividing the longitude by 15 and rounding the resulting quotient, 2From a place every time zone to the east his zone time is an hour earlier.

In the question, the time zone of 118 degrees west longitude is 118 15 = 8 (west 8 districts), the time zone of 18 degrees east longitude is 18 15 = 1 (east 1 zone), and east 1 zone is 9 time zones east of west 8 districts, so the zone time difference is 9 hours.

Just look at the longitude. For every 15 degrees of longitude, the time difference is 1 hour. (Because the Earth rotates 360 degrees, 24 hours, 15 degrees per hour).

The standard of time in the world is based on the prime meridian of the United Kingdom, which spans from east to west as a zone, and then takes the east-west longitude, each crossing 15 degrees from east to west as a zone, and the time of 0 15 degrees is the standard time of the zone. Of course, some countries use the capital time of the country as the standard time of the country, and some countries have multiple times due to the longer zones crossed, such as the eastern time and western time of the United States.

To calculate the difference in time, it is necessary to convert it into zones, and then use the difference of one hour for each zone: in the same hemisphere, the difference is the time by subtracting the number of zones; For those not in the same hemisphere, the difference is the sum of the number of zones.

118 degrees west longitude is the 8th zone of the west; 18 degrees east longitude is East 2 zone, so the difference between the two places should be 10 hours.

Time has nothing to do with latitude.

The difference between the two places is 136 degrees of longitude, and the earth is divided into 360 degrees of longitude.

24 hours in a day, then 24 * (136 360) about = hours.

Theoretically, it is 9 hours, but in fact, it is calculated according to what is said upstairs, and the upstairs is correct, which is 10 hours.

The upstairs method is correct, I'll do the math:

The difference between the two places is 118 + 18 = 136 degrees.

136 15 = 9 remainder 1. So the difference is nine hours. Site B is nine hours ahead of place A

The length of the weft varies and there is no specific length, the length of the warp is 20037km.

1. Weft: The weft is a circle of unequal length, and the longest weft coil - the equator, is called the 0° parallel. The latitude measured north from the equator is called the north latitude, and the south latitude is called the south latitude. The north and south latitudes are 90° north, the North Pole is 90° north latitude, and the South Pole is 90° south latitude.

2. Warp: The semicircle in which the warp coil is divided by the two poles is called the warp. The length of the meridian is about 20,037 km, and any two meridians are of equal length, intersecting at the north and south poles. Each meridian has its corresponding numerical value, called longitude. The meridian indicates north and south.

The length of the meridian is the same, that is, it refers to half of the circumference of the earth, that is, 20,000 kilometers, and the length of the latitude can be large or small, the largest is the equator, 40,000 kilometers, and the smallest is the north and south poles, zero kilometers.

The length of the meridians is equal, 20,000 kilometers.

The longest equator in the parallels is 40,000 kilometers, and the length of the other parallels is the length of the equator multiplied by the cosine of that latitude.

The longest length of the weft is.

The length of the meridian is 20,037 km

The longitudes and longitudes on Earth are ultra-clear.

On the globe, you can see criss-crossing lines, which are the latitude and longitude lines. The line connecting the north and south poles is called the meridian. The thread perpendicular to the warp is called the weft. The weft is a circle of varying lengths. The longest parallel is the equator.

Weft warp.

1.The shape is round and semicircled.

2.The size of the equator is up to 40,000 kilometers and is equal in length, 20,000 kilometers.

Progressively shorter to the poles to 0 km.

3.The limit of the scalar number is the equator (0° latitude) 0°, and the Huizhou Hu 180° meridian.

East longitude is north latitude, south latitude 0° east and 180° west.

0° West and 180° East is the west longitude.

4.The scale number ranges from 0°, 90°, 0°, 180°5The symbol of the scale number is north latitude n, south latitude s east longitude e, west longitude w6The boundary that divides the hemisphere is the equator (0° parallel) and the meridian coil formed by 20°W and 160°E.

North of the equator in the Northern Hemisphere, 20°W east to 160°E is the Eastern Hemisphere.

South of the Southern Hemisphere 20°W west to 160°E is the Western Hemisphere.

7.Directions: Indicates East and West, Indicates North and South.

Generally, left, west, right, east, generally up, north, down, south.

Distinguish between longitude and latitude: the line connecting the north and south poles is called the meridian. The thread perpendicular to the warp is called the weft. The meridian connects the north and south poles. The weft is the line that points to the east and west.

Characteristics of the meridian: 1. The meridian indicates the north-south direction, and the meridian is also called the north-south line or the meridian of the sub-difference cavity.

2. All meridians converge at the South and North Poles.

3. Two warp threads facing each other form a warp coil.

4. All warp lengths are approximately equal.

5. Any warp coil divides the earth's surface into two hemispheres.

Features of the weft:

1. All the parallels are parallel to each other.

2. The weft line indicates the east-west direction.

3. Each weft line forms its own circle and forms a separate weft coil.

4. The length of each parallel, the longest parallel, is the equator, so the further south and north, the shorter the parallel.

The meridian is the vertical line on the map, and the zero degree passes through the Greenwich Observatory in the United Kingdom, so it can be found in the meridian that wears the United Kingdom. The parallel line is the horizontal line of the equator on the map, which is found in a horizontal line in the middle of the earth. Finding the zero meridian and the equator can distinguish between the northern and southern hemispheres and the eastern and western hemispheres.

The meridians and parallels are drawn on globes and maps in order to determine the position and direction on the earth.

The latitude and longitude lines are perpendicular to each other. The weft is a circle of varying lengths. The longest parallel is the equator. The meridian is an arc of equal length, connecting the north and south poles. Because the meridian indicates the north-south direction, the meridian is also called the meridian.

The view of the latitude and longitude areas is as follows:

The difference between longitude and latitude: the line connecting the north and south poles is called the meridian. The thread perpendicular to the warp is called the weft. The weft is more than one blind circle of varying lengths. The longest parallel is the equator.

Meridian. 1. A semicircle connecting the poles of the north and south shengzhen and intersecting perpendicular to the latitude. Indicates a north-south direction (perpendicular to the equator), each meridian is a half-circle, and the meridians are all equal in length.

2. The meridian is an arc connecting the north and south poles and perpendicular to the latitude, and any two meridians on the earth's surface are equal in length and intersect at the north and south poles. The meridian that passes through the former site of the Greenwich Observatory in London, England, is the zero degree longitude, also known as the prime meridian.

3. The whole earth is divided into 180 parts from the prime meridian to the east and west, and each meridian has its corresponding value, that is, longitude, and the difference between each meridian is 1 degree. Beijing, the capital of China, is located on the 116th longitude of east longitude.

Parallel. 1. A circle perpendicular to the Earth's axis and orbiting the Earth. Features: Indicates east-west direction (perpendicular to the Earth's axis), each parallel is a circle, the length of the parallels is not equal (the equator is the longest parallel, the closer to the poles the smaller it is).

2. The latitude line is a line perpendicular to the earth's axis, which circles the earth in an east-west direction, and all latitudes are parallel and perpendicular to the meridian. Among them, the equator is the longest latitude with a latitude of 0 degrees, and the whole earth is divided into 90 parts north and south along the equator, each of which is 1 degree. Therefore, 90 degrees south latitude is the South Pole and 90 degrees north latitude is the North Pole.

Beijing, the capital of China, is located at 39 degrees north latitude.

Warp and weft lines distinguish and view:Latitude: 90° to the south and north from the equator, south to south and north to north.

Longitude: 180° to east and west from the prime meridian, east is east longitude and west is west longitude.

Longitude: the line connecting the north and south poles and intersecting perpendicular to the parallel, and the meridian line indicates the north-south direction; All the warp threads are semicircular and equal in length; Two warp lines facing each other form a warp coil; Any one warp coil can divide the Earth into two hemispheres. Parallel.

On the globe, the circle that circles around the globe in the east-west direction is called the parallel.

The latitude and longitude lines are perpendicular to each other. The weft is a circle of varying lengths. The longest parallel is the equator. The meridians are arcs of equal length, connecting the north and south poles.

Because the meridian indicates the northern direction of Nanling Liang, the meridian is also called the meridian. Internationally, the meridian passing through the original site of the Greenwich Observatory in the United Kingdom is called the 0° meridian, also known as the prime meridian. On Earth, the meridian lines indicate the north-south direction, and the latitude lines indicate the east-west direction.

Dividing line between the eastern and western hemispheres: 160° east longitude and 20° west longitude.

The vertical lines of latitude and longitude are east and west, and the horizontal lines are north and south.

1. Determine the east-west longitude and north-south latitude code.

Looking at the numbers, it is east longitude (e) that is getting bigger and bigger to the east, west longitude (w), north latitude (n), and south latitude (s).

2. Judge the direction.

The meridian refers to the east-west (absolute direction) For example, if you want to determine the direction in which point A is located at point C, then mark the east-west north-south at point C, and then see that point A is bounded between the two directions, then point A is in the direction of point C.

3. Judge the east, west, north and south hemispheres according to latitude and longitude.

Longitude less than 20 degrees, all in the Eastern Hemisphere; Longitude greater than 160 degrees, all in the Western Hemisphere; The longitude is between 20 and 160 degrees, the east longitude is in the eastern hemisphere, and the west longitude is in the western hemisphere. Judgment of the northern and southern hemispheres: north latitude in the northern hemisphere, southern latitude in the southern hemisphere.

Warp and weft.

All circles on a sphere can be seen as being formed by a certain plane and a certain sphere, that is, the intersection of a certain plane and a certain sphere.

Geometrically, any circle represents a certain plane. The large circle formed by the plane of the earth's axis cut from the earth's surface is called a warp coil. This warp coil plane passes through the earth's axis and therefore also through the center and poles.

In the same sphere, with the center of the sphere as the center of the circle, they are all great circles, so the meridians are all great circles. Since all meridians pass through the poles of the earth, each meridian coil is divided into two semicircles of 180° by the north and south poles, which are called meridians or meridians.

The weft is different from the warp in that it is a circle and has a difference in size. The size of the weft coil is determined by the distance between its circle and the center of the earth. The closer the center of the weft coil is to the center of the earth, the larger the weft coil is, and vice versa, the smaller it is.

Therefore, the weft coil centered on the center of the earth is the largest weft coil and is called the equator; And the farthest coil of latitude from the center of the earth are the north and south poles.

On the earth's surface, there are infinite lines of longitude and latitude. Any point on the earth's surface has its own meridians and parallels, that is, every point is the intersection of meridians and parallels. From the point of view of the relationship between the two, the meridian and the latitude are perpendicular to each other, because the relationship between the plane passing through the earth's axis and the plane perpendicular to the earth's axis is perpendicular to each other.

The meridians all represent the north-south direction, and since the meridians converge at the South Pole and the North Pole, the north-south direction is the meeting direction and is a limited direction. The parallels represent the east-west direction, east is the direction of the earth's rotation along the parallel, and west is the opposite direction of the earth's rotation along the parallel. So, the east-west direction is the circular direction (or the direction of rotation), which is an infinite direction.

Warp and weft. Defines a semicircle that connects the north and south poles and intersects perpendicular to the parallels.

A circle perpendicular to the Earth's axis and orbiting the Earth.

Circle lonely condition. In a semicircle, two corresponding warp threads form a warp coil.

Circle, each weft is its own weft coil.

Length: Each warp is equal in length.

In the case of the hemisphere, each parallel is of unequal length; Globally, lines of the same latitude are equal in length.

Indicate the direction. North-South direction.

East-west direction.