Geographical time calculation ① When Beijing local time 1 1:00, what time is Beijing time?

The local time in Beijing is the local time of the meridian (1 16 28') where Beijing is located.

Beijing time is the local time of the central meridian (east longitude 120 degrees) in Beijing time zone (East Eighth District).

The difference between the two is 4, and Beijing time is calculated by local time. The principle of addition and subtraction and the principle of one-hour crossing15,4 are 16 minutes, so Beijing time is11:00+16 =1/kloc-0.