To avoid confusion over timetables. It's much better to use the 24-hour clock system.
5.45 or 17.45 (assuming the use of the 24 hour clock system).
Both systems are in use in England (and indeed in Great Britain as a whole). In the past originally only the armed forces used the 24 hour system but now the whole population is aware of it. Some people use the 24 hour clock system and some just use the am/pm system, most people however are adept at using both systems.
A 24 hour clock is better when you are running around the clock operations. Military, Police and Fire Stations use it to avoid any confusion when talking time. Factories that run around the clock, shipping companies, and airlines use it. Answer The Aviation and Space industries use the 24 hour clock as well. It reduces confusion, especially when written or oral communications are critical
12 hour clock we use in our homes.24 hour clock is used in travelling places eg:airport,train station.
24 Hour is used in all countries except the united states of america
2
That is the correct spelling of "what time is it?" -- the answer will often use the hour name o'clock which is a contraction for of the clock, or by the clock.
we use computer programing to operates different logic in computer system
use the clock button on dash Also one for the hour and one for the minutes
Press Clock button and hold then use seek and tune button to ajust hour and minute.
Some people have used it for many many years. Most still use the 12 hour clock, although for some special applications they might use the 24 h version.