When is nine o'clock in the morning

1. According to the Gregorian calendar, Shi Si is at 9: 00 a.m., and according to the current 24-hour system, Shi Si is at 9: 00 a.m. to 1 1. In ancient times, it was also called horn, which represented the time near noon.

2. Twelve o'clock is the time created by working people in ancient China according to the natural law of sunrise and sunset in a day, the change of the sky and their daily production activities and living habits.

3. The specific time corresponding to modern 24-hour is divided into: 23~ 1 o'clock, clown 1~3 o'clock, 3~5 o'clock in cloudy time and 5~7 o'clock in gross time. Chen time is 7~9 o'clock, the last time is 9~ 1 1 point, Chou Shi1~13 o'clock, Chou Shi 13~ 15 o'clock, and the application time is/kloc.