Why Do We Call It AM and PM? The Surprisingly Ancient Reason
Why Do We Call It AM and PM? The Surprisingly Ancient Reason
Ever wondered what “AM” and “PM” actually stand for?

In this video, we dive deep into the surprising history behind these two everyday time labels. From ancient civilizations to Roman astronomy, from Latin origins to modern-day confusion about 12 AM and 12 PM — this video breaks down everything you never knew you needed to know about the world’s most commonly used time system.

Discover why societies still use AM and PM despite the existence of the 24-hour clock, how the Sun influenced ancient timekeeping, and why these abbreviations have survived thousands of years. If you love trivia, history, or simple explanations to everyday questions, this video is perfect for you!

⏰ Timestamps

  • 0:03 — Intro
  • 1:14 — The Ancient Origins of Timekeeping
  • 1:46 — Why the Midday Sun Was So Important
  • 2:20 — The Latin Roots of “AM” and “PM”
  • 3:36 — Why Noon and Midnight Are So Confusing
  • 4:45 — Why Some Countries Use the 24-Hour Clock Instead
  • 6:03 — How AM and PM Spread Through History
  • 7:02 — Why the System Still Exists Today
  • 7:21 — Final Thoughts

 

Author, educator, musician, dancer and all around creative type. Founder of "The Happy Now" website and the online jewelry store "Silver and Sage".

What's your reaction?