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Calendars.

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Dates form the backbone of written history. But where do these dates come from? Many different calendars were used in the ancient world. Some of these calendars were based upon observations or calculations of regular astronomical phenomena, such as the first sighting of the new moon crescent that defined the beginning of the month in many calendars, while others incorporated schematic simplifications of these phenomena, such as the 360-day year used in early Mesopotamian administrative practices in order to simplify accounting procedures. Historians frequently use handbooks and tables for conv

Calendars -- History. --- Calendars -- Middle East -- History. --- Calendars --- History --- Astronomy --- Time

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Iconography found in Roman and Byzantine illustrated calendars can be divided into three themes: astrological-astronomical, festive-ritual and rural-seasonal. This volume presents an in-depth study of the connections between the meaning of the iconography of the illustrated calendars and their historical and cultural context.

Calendar, Roman --- Calendars --- Months in art. --- History.

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Devotional calendars --- Religion --- Philosophy & Religion --- Christianity --- Christian devotional calendars --- Daily readings (Spiritual exercises) --- Devotional exercises (Daily readings) --- Devotional yearbooks --- Calendars --- Devotional literature --- Bible --- Reading.

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With background history on astronomy and the history of writing and counting as well as methods for converting dates in one calendar to another, this volume provides a useful overview of how calendars were invented and their subsequent development.

Calendar --- Calendars --- Related Historical Sciences --- History & Archaeology --- Calendars & Chronologies --- Annuals --- Dates, Books of --- Chronology, Historical --- Yearbooks --- Almanacs --- History. --- History