How Humans Invented Time

Every clock you look at is lying to you. For most of human history, an hour in the summer was literally twice as long as an hour in the winter, and no one found that strange. Today, you organize your entire life around arbitrary numbers chosen by ancient empires, you feel guilty for being 'late' to imaginary moments, and you accept without question that an hour must be exactly 60 minutes. But why 60? We didn't discover how to measure time; we made it up. And the machine has been running our lives ever since. ⏱️ Chapters: 0:00 - The Stretching Hour 0:27 - Why 12? The Anatomy of a Day 1:04 - The Genius of 60 1:21 - The Monks and the Sun 2:30 - When the Machine Replaced the Sky 3:16 - The Imaginary Crime of Being Late 4:22 - How the Railways Killed Local Time 5:13 - The Year They Abolished the Week 6:40 - The One Thing a Clock Can't Measure SOURCES AND CORRECTIONS Temporal hours — twelve of daylight and twelve of night, changing length with the season — are well documented across Egypt, Rome and medieval Europe, and the roughly two-to-one summer-to-winter swing follows directly from the daylight range at European latitudes. Egyptian shadow clocks dividing the day into twelve date from around 1500 BC, and the decan stars are the usual explanation for the twelve hours of night. The sexagesimal system comes from Mesopotamia. Mechanical clocks with an escapement appear in Europe in the late thirteenth century, and equal hours spread with them; a handful of clocks were built or adjusted to keep unequal hours, but the practice did not last. Railway time and Greenwich, standard time in the United States in 1883 and the International Meridian Conference of 1884 are all matters of record. The Soviet nepreryvka ran from 1929, moved to a six-day cycle, and the seven-day week returned in June 1940. Where the record is a best guess rather than a fact, I say so in the video; the finger-joint explanation for twelve is the leading hypothesis, not a settled finding. If I got something wrong, please tell me in the comments, and I'll pin the correction. #History #Time #Clocks