What time is 9 o'clock? What time does 9 o'clock belong to?

1. According to the Gregorian calendar, 9 am is Shi Si time, while according to the current 24-hour system, Shi Si time is from 9 am to 1 1. In ancient times, it was also called the horn, representing the time near noon.

2. As the first prime time for work and study, Shi Si is the most efficient time for office workers to study and work. Because the brain is the most active period during this period, it is possible to solve important problems during this period.