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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

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Q: When is it better to use the 24 hour clock instead of a 12 hour clock?
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To avoid confusion over timetables. It's much better to use the 24-hour clock system.

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