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Q: Why there is no daylight saving time in China?
I was wondering if anyone knows if this something common in Asia or if there is any other reason why China doesn't switch to summer time
China used to have daylight saving time from 1986 to 1991. Then it got canceled.
There are many pros and cons I have read about using daylight saving time. Both sides exaggerate as much as they can to a ridiculous extent.
There are also many numbers calculating how much energy DST could have saved. But I don't know if their calculation is scientific enough, or has allowed for all factors.
You could also ask why there is no time zones in China. I mean the difference in sunrise from east to west is quite a lot.
It's great though. Daylight saving is in my mind a thing of the past and with modern day energy needs the saving is outweighed by the annoyances.
erokose:
From what I know the decision to have only one time zone was mainly political, to give a sense of a unified China after the PRC was founded.
From what I know the decision to have only one time zone was mainly political, to give a sense of a unified China after the PRC was founded.
Firstly, I agree that the PRC has been trying hard to give a sense of a unified China.
Second, for your information, during the Anti-Japanese War, the Ministry of Interior of the Republic of China decided to use the Kansu-Szechuan Time Zone ,(Chinese: 隴蜀時區; pinyin: Lǒng-Shǔ Shíqū), which based on the longitude 105°E and covered the mid-western part of China.
Also, Taiwan used DST from 1945-1961,1974, 1975,1978 and 1979. It was abandoned since 1980.
Information Source is the Chinese wikipedia page of the item"Time in China".
http://zh.wikipedia.org/wiki/%E4%B8%AD%E5%9C%8B%E6%99%82%E5%8D%80
Beijing "big shots' do not want their sleep patterns disrupted ....... Africa and South America and Greenland will soon change to China Standard time as well, so business can carry on normally, interrupted, by silly "time zones".
Because there is no daylight to save due to the air quality!
In China they don't even set different for all 5 time zones, obviously that's too complicated for them.
How can you expect them to make day saving time?
The Chinese idea of "daylight saving" is to keep a couple of fireflies in a jar! 
The corrupt politicians do their business at night, and if they saves daylight Superman would be too powerfu,l because he gets his power from the sun.
Now THAT would be seriously funny if they ever tried to implement that!
I've been thinking about that since the time the government banned disposable plastic shopping bags in 2008, 2009? (as you may have noticed). I used to think, hey, 1.3 billion people turning off the lights an hour earlier... wouldn't that make an interesting difference? But it's not that many. There are still about 800 million people so blessed as to live in the countryside and even those that do have electricity sleep in harmony with nature. The pigs call out for food at their time, the cows need being milked, the bowels need to be emptied. When sun's going down, so do the eye-lids. No way that an artificial device like a clock is of any influence. On the local bus one can still observe the after-effects of this way of life when the several (electronic!) clocks unintentionally succeed in showing past and future.
It is the one thing the CCP got right. Even the worst leaders makes a great rule once in a while. Look up Hitlers smoking policy !
It's too hard to reset the roosters that are used for alarm clocks.
