Hello everyone Here is Lu Mei who goes to work on time
I don't know how everyone's weekend went
The first day of the week has arrived
Please cheer up!
Let's use a few quiz questions
As a small exam question this Monday
First question
Do you know what the time difference is in China?
4 hours
By longitude, there are twenty-four time zones in the world
The meridian passing through the Greenwich Observatory in the United Kingdom is the zero degree meridian
To the east is the east longitude and to the west is the west longitude
Divide a time zone every 15 degrees
To the east there are twelve districts and to the west there are twelve districts
The time difference in each zone is one hour
Our country is vast
Spans five time zones in longitude
They are: East 5th District, East 6th District,
East 7th District, East 8th District, East 9th District
The westernmost point is near the Pamir Plateau
The easternmost points are the Heilongjiang and Ussuri rivers
At the meeting point of the central route
So the time difference in our country is
4 hours!
Second question
Is "Beijing time" the local time in Beijing?
No
In fact, what we call "Beijing time"
It is not the local time of Beijing (116.4° E).
It is the International Time Zone East District VIII
That is, when it is 120° east longitude
"Beijing time" is also not determined in Beijing
It is located in Shaanxi
National Timing Center, Chinese Academy of Sciences
to generate, maintain and broadcast "Beijing time"
Determine the device for Beijing time
It is located at the geometric center of the Chinese territory
9 sets of cesium (sè) atomic clocks and 2 sets of hydrogen atomic clocks
Cesium atomic clock
There is scientific determination at the same time
Our lives save us a lot of trouble
When some major social public events occur
People can be based on the unified "Beijing time"
Come and get involved in these events on time
Hydrogen atomic clock
For example, when the college entrance examination is held
If we start the test at 9 o'clock local time
The time difference in the eastern and western regions is about three hours
Well, there's a good chance
The children in the eastern region have finished the rolls
The western region may have only just begun to answer the questions
Most of our provinces use national volumes
Once the exam time is staggered
The results of the examination are inevitably unfair
So to be fair
We have set the exam time uniformly
"Beijing Time"
One last question
What is the country with the largest domestic time difference in the world?
Russia
That's right! It's Russia!
The Russian longitude span has 150 longitudes
Meridian from 30° to 180° east longitude
There are 10 time zones in the time zone span!
From the East 3rd District to the 12th East District
At very large spans of time difference
The Russian people on the plains of Eastern Europe have just eaten breakfast
The comrades in the Far East have washed and slept
In the middle of the night, I want to make phone porridge with my good friends in the distance
First calculate whether the other party is at work
The plan of the week lies in Monday
I wish you all the best of the week!