There were 5 time zones in China before 1949. Why did China switch to only one time zone in 1949?

Why does China have one time zone

China tried multiple time zone 1912-1949, and Xinjiang and Tibet are using de facto UTC+6 in various occasions.



work hours of stores, offices).

,I heard in the 80s they tried UTC+6 in those area, but it didnt work well and made lots of confusion.

In 05 and 06 it was proposed again but didnt made it.

China time zone UTC

All the places in China are arranged in one time zone because it is easer to manage the schedule for transportation and other events.

,And people in u65b0u7586 and u897fu85cf have a different daily schedule from eastern provinces by a 2 hours delay.

For example, usually people in u4e0au6d77 start working at 9 and have lunch at 12, and then in u65b0u7586 they start working at 11 and have lunch at 14.

China time zone

West = behind.

China is west of Japan.

China is 1 hour behind Japan.

,China is west of Korea.

China is 1 hour behind South Korea and 1.

5 hours behind North Korea.

Seattle is west of Denver.

Seattle is 1 hour behind Denver.

,Seattle is also west of Minneapolis.

Seattle is 2 hours behind Minneapolis.

,Seattle is even farther west of New York.

Seattle is 3 hours behind New York.

,New York is west of London.

New York is either 4 or 5 hours behind London, depending on the date, due to Daylight Savings Time and British Summer Time not being synchronized.

,Itu2019s the same everywhere.

West = behind.

However, the date follows too.

New York is west of Beijing.

When itu2019s 1am in Beijing, for example, your calendar in New York will be 1 numerical date behind.

After all, how else can you be u201cbehindu201d 1am?

China time zone right now

Are you kidding? Time zones create a lot more problems than they solve.

,With one time zone, you have the sun rising at 4 am in some places and 7 am in other parts.

If people go to work 2 hours after the sun rises, then some people go to work at 6 am and others go to work at 9 am.

If people eat lunch when the sun is directly overhead, then some people eat lunch at 9 am and some eat lunch at 12 pm.

If people sleep a few hours after sunset, then some people go to sleep at 8 pm and some people go to sleep at 11 pm.

This obviously doesnu2019t pose any issue for the locals: they know what number means what time of day.

If youu2019re a large corporation, you just tell your employees in some places to come in at 9 am, and in other places at 6 am.

No big deal, right?,With multiple time zones, sure, you can have everyone go to work at 9 am and eat lunch at 12 pm, but at a great cost.

Now whenever people in two different time zones need to communicate with each otheru2014which is increasingly often in a globalized worldu2014at least one of them has to calculate the time zone offset between the two regions.

Instead of saying u201cIu2019ll call you at 2 pmu201d, you have to think u201chmm, 2 pm my time is 5 pm your timeu2026u201d and say u201cIu2019ll call you at 5 pm your time.

u201d If some announcement is going to be made at 3 pm in some time zone, everyone who hears about the timing of the announcement has to translate that into their local time.

,You donu2019t even get the benefits of knowing more easily what time of day it is at some other longitude.

Say itu2019s 9 pm in London and youu2019re thinking about calling your friend in Athens.

,Without time zones, you need to remember (or look up) that your friendu2019s times of day are offset from yours by 3 hours so your friend is likely asleep as you would be at 12 amu2014so you wait until tomorrow.

,With time zones, you need to remember (or look up) that your friendu2019s time zone is offset from yours by 3 hours so itu2019s 12 am for them and theyu2019re likely asleepu2014so you wait until tomorrow.

,As you can see, the latter is not really easier than the first.

But it incurs all the communication-related costs I previously described.

China time zone map

Theoretically, each time zone is 15u00b0 of longitude in width.

This corresponds to a time difference of one hour.

,Now, if the time zones were strictly divided into uniform strips with straight lines, there would be a small problem.

,Imagine that somehow, your home comes in between two such time zones.

You dont want one part your home in one time zone while the other is in another.

Although it sounds cool (as you can have breakfast before even waking up, time wise), it isnt convenient.

,Hence, each country divides the time zone lines irregularly to match their boundary so that maximum part of it belong to the same time zone.

,Countries like the USA have no choice but to have different time zones (very wide latitude wise), while countries like India can alter the time zone line so that the whole country belongs to one time zone.

,FACT: China is the largest country to have only one time zone, despite covering 5 different time zones.

The single standard time is an offset of +0800.

Imagine the irregularity introduced! :D

How many time zones are there

Indian Standard Time (IST) is the time observed throughout India and Sri Lanka, with a time offset of UTC+05:30.

India does not observe daylight saving time (DSTu) or other seasonal adjustments.

In military and aviation time IST is designated E* (Echo-Star).

,Indian Standard Time is calculated on the basis of 82.

30 E longitude, in Kakinada which is nearly on the corresponding longitude reference line.

,After independence in 1947, the Indian government established IST as the official time for the whole country, although Kolkata and Mumbai retained their own local time (known as Calcutta Time and Bombay Time until 1948 and 1955, respectively.

The Central observatory was moved from Chennai to a location at Shankargarh Fort in Allahabad district, so that it would be as close to UTC +5:30 as possible.

,Daylight Saving Time (DST) was used briefly during the China-Indian War of 1962 and the Indo-Pak Wars of 1965 and 1971.

,The countrys eastu2013west distance of more than 2,933 kilometres (1,822 mi) covers over 29 degrees of longitude, resulting in the sun rising and setting almost two hours earlier on Indias eastern border than in the Rann of Kutch in the far west.

Inhabitants of the northeastern states have to advance their clocks with the early sunrise and avoid the extra consumption of energy after daylight hours.

,In the late 1980s, a team of researchers proposed separating the country into two or three time zones to conserve energy.

The binary system that they suggested involved a return to Britishu2013era time zones; the recommendations were not adopted.

,In 2001, the government established a fouru2013member committee under the Ministry of Science and Technology to examine the need for multiple time zones and daylight saving.

The findings of the committee, which were presented to Parliament in 2004 by the Minister for Science and Technology, Kapil Sibal, did not recommend changes to the unified system, stating that the prime meridian was chosen with reference to a central station, and that the expanse of the Indian State was not large.

,Though the government has consistently refused to split the country into multiple time zones, provisions in labour laws such as the Plantations Labour Act, 1951 allow the Central and State governments to define and set the local time for a particular industrial area.

In, tea gardens follow a separate time zone, known as the Chaibagaan or Bagan time (Tea Garden Time), which is one hour ahead of IST.

Still Indian Standard Time remains the only officially used time.

,The filmmaker Jahnu Barua has been campaigning for a separate time zone (daylight saving time) for the past 25 years.

In 2010, he suggested creating a separate time zone for the Development of Northeastern Region.

,In 2014, Chief Minister of AssamTarun Gogoi started campaigning for another time zone for Assam and other northeastern states of India However, the proposal would need to be cleared by the Central Government of India.

,In June 2017, Department of Science and Technology (DST) indicated that they are once again studying feasibility of two time-zones for India.

A proposal for both creating an additional Eastern India Timezone (EIT @ UTC+6:00) shifting default IST to UTC +5:00 and Day-light saving (IDT for IST and EID for EIT) starting on 14 April (Ambedkar Jayanti) and ending on 2 October (Gandhi Jayanti) was submitted to DST for consideration.

How many time zones does Russia have

Russia has eleven time zones.

They are:,UTC+2 (Kaliningrad Time),UTC+3 (Moscow Time),UTC+4 (Samara Time),UTC+5 (Yekaterinburg Time),UTC+6 (Omsk Time),UTC+7 (Krasnoyarsk Time),UTC+8 (Irkutsk Time),UTC+9 (Yakutsk Time),UTC+10 (Vladivostok Time),UTC+11 (Magadan Time),UTC+12 (Kamchatka Time),Note that since 2011, Russia has not used Daylight Savings Time.