What does "daylight saving time" mean in the constellation?

Daylight saving time is to save energy and set time artificially. Daylight saving time is also called daylight saving time and daylight saving time, and the unified time used in the implementation of this system is called daylight saving time.

Generally, in early summer, artificially adjusting the time for one hour can make people get up early and go to bed early, reduce the amount of lighting, make full use of lighting resources, and thus save lighting electricity. Countries that adopt daylight saving time have different specific regulations. At present, nearly 1 10 countries around the world implement daylight saving time every year.

Extended data:

With the support of President Dmitry Medvedev, the time in every time zone in Russia is permanently moved forward 1 hour at 2 pm local time, using daylight saving time. For example, there will be a permanent time difference of 4 hours between Moscow time and GMT. According to Agence France-Presse, since 1930, the Soviet Union asked the whole country to speed up the time by one hour, which means that the time in all parts of Russia will be two hours faster than before.