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  2. History of calendars - Wikipedia

    en.wikipedia.org/wiki/History_of_calendars

    The Akan Calendar is a Calendar created by the Akan people (a Kwa group of West Africa) who appear to have used a traditional system of timekeeping based on a six-day week (known as nnanson "seven-days" via inclusive counting). The Gregorian seven-day week is known as nnawɔtwe (eight-days). The combination of these two system resulted in ...

  3. Names of the days of the week - Wikipedia

    en.wikipedia.org/wiki/Names_of_the_days_of_the_week

    The Babylonians invented the actual [clarification needed] seven-day week in 600 BCE, with Emperor Constantine making the Day of the Sun (dies Solis, "Sunday") a legal holiday centuries later. [2] In the international standard ISO 8601, Monday is treated as the first day of the week, but in many countries it is counted as the second day of the ...

  4. The 40 Hour Work Week: Who Came Up With It? - AOL

    www.aol.com/40-hour-week-came-130142457.html

    The simple math behind the 40-hour work week is a standard eight-hour shift times five work days in a week -- but that figure didn't appear out of thin air. ... "American capitalism in the 21st ...

  5. Planetary hours - Wikipedia

    en.wikipedia.org/wiki/Planetary_hours

    The planetary hours are an ancient system in which one of the seven classical planets is given rulership over each day and various parts of the day. Developed in Hellenistic astrology, it has possible roots in older Babylonian astrology, and it is the origin of the names of the days of the week as used in English and numerous other languages.

  6. Why do we work 9 to 5? The history of the eight-hour workday

    www.aol.com/why-9-5-history-eight-105902493.html

    Hunnicutt’s book, “Kellogg’s Six-Hour Day,” tells the story of how cereal baron W.K. Kellogg decided in 1930 to institute six-hour shifts in place of eight-hour shifts, with some reduction ...

  7. Week - Wikipedia

    en.wikipedia.org/wiki/Week

    A week is a unit of time equal to seven days. It is the standard time period used for short cycles of days in most parts of the world. ... 1 week = 7 days = 168 hours ...

  8. Unit of time - Wikipedia

    en.wikipedia.org/wiki/Unit_of_time

    Earth-based: the day is based on the time it takes for the Earth to rotate on its own axis, as observed on a sundial [citation needed]. Units originally derived from this base include the week (seven days), and the fortnight (14 days). Subdivisions of the day include the hour (1/24 of a day), which is further subdivided into minutes and seconds ...

  9. Eight-day week - Wikipedia

    en.wikipedia.org/wiki/Eight-day_week

    This meant that the first period of time in a "week" was a night, followed by a day. Further, they also counted the ending night period, giving rise to periods of time with more nights than days. In Old Irish, the term nómad is used to signify a number of days. The usage of the term varies and there are different theories about the length of ...

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