When does the Tiananmen flag in Beijing rise in winter?

04:45-04:48。 The rising and falling time of the national flag in Tiananmen Square is determined according to the sunrise and sunset time in Beijing. The flag-raising ceremony in Beijing in winter is around 04: 45-04: 48. The exact time was calculated by astronomer Lin Heng of Beijing Observatory. In the morning, when the upper edge of the sun is equal to the horizon seen in Tiananmen Square, the time and date of raising the national flag are different.