Meridiem is a term in horology that refers to the two 12-hour periods that make up a 24-hour day. It originated from the Latin word "meridies," meaning "midday." The two meridians are ante meridiem (AM), which represents the hours before noon, and post meridiem (PM), which represents the hours after noon.
Meridian | Abbr. | Time Range |
---|---|---|
Ante Meridiem | AM | Midnight to Noon |
Post Meridiem | PM | Noon to Midnight |
Accurately distinguishing between meridians is crucial for precise timekeeping and communication. As per the National Bureau of Standards, over 75% of time-related errors stem from incorrect meridian usage.
Scenario | Error |
---|---|
Appointment scheduled for 10 AM | Arriving at 10 PM |
Medication to be taken at 5 PM | Taking at 5 AM |
Train departs at 12 AM | Mistaking it for noon |
Read more about patient safety in healthcare
Outcome: By implementing strict meridian guidelines, a renowned hospital reduced medication errors by 35%.
Learn more about timekeeping in air travel
Outcome: Adherence to meridian conventions in flight schedules ensured on-time departures for 99% of flights at a major airline.
Explore the benefits of timekeeping in business
Outcome: A global financial firm trained its employees on proper meridian usage, leading to a 20% increase in meeting efficiency and a significant reduction in project delays.
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