Beijing time is the standard time for China to adopt Beijing Dongba time zone. Beijing time is not Beijing time (1 16.4), but local time 120. Because Beijing is located in the East Eighth District, which divides the international time zone, it is 8 hours different from Greenwich Mean Time (Universal Time) (that is, Beijing time = Universal Time +8 hours). However, China's east-west phase spans five time zones, so the time service station must be built in the central area, which leads to the broadcast location of long and short wave "Beijing time" not in Beijing, but in Pucheng, Shaanxi. The time service department of the National Time Service Center of Chinese Academy of Sciences in Pucheng, Shaanxi Province is responsible for releasing Beijing time (China Standard Time).

Brazil (Rio) Time: Brazil has three local time from east to west, from West Zone 2 to West Zone 4. Generally speaking, the most commonly used time is the west third district of Brasilia. It is exactly 3 hours different from Greenwich Mean Time (Universal Time) (that is, Brazil Time = Universal Time -3 hours). That is, the time difference between Beijing time and Rio time is 1 1 hour (8-(-3)= 1 1). However, from June 10 to February of the following year, the Brasilia time zone will implement daylight saving time, and the clock will be moved forward by 1 hour, that is, the time difference with Beijing will be reduced to1hour.

The Brasilia time zone is not daylight saving time now. The time difference between Beijing time and Rio time is 10 hour.