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99% Invisible

The Calendar

Apr 8, 2015
16:09
Snipd AI
Explore the historical origins of the Gregorian calendar and its irregularities. Learn about the discovery of the true length of the year and the invention of leap year. Discover the history of calendar reform, including a radical 13-month calendar design. Understand the challenges faced in implementing a 13-month calendar and the significance of the calendar in different cultures.
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Podcast summary created with Snipd AI

Quick takeaways

  • The current calendar is a fusion of the Roman and Egyptian calendars, influenced by Caesar and Cleopatra's relationship.
  • Various attempts at calendar reform have been made throughout history, including a 13-month calendar proposed for increased efficiency and industrial planning.

Deep dives

The History of the Gregorian Calendar

The current calendar used worldwide is a combination of the Roman and Egyptian calendars, resulting from the influence of Caesar and Cleopatra's relationship. The Egyptians, known for their Nile River observations, discovered the year's true length and invented the leap year to align the calendar with the seasons.

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