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    Sidebar

    Development of Timekeeping and Time Systems

    How the idea of measuring seasons, dates, and time developed into time systems and calendars

    Development of Time Calendar Systems Calendar Apps Time Zones Sunrise/Sunset Bottom
    • Development of Time and Time Systems
      • by Robin Westgate
      • , National Institute of Standards and Technology
      • from Anthony Gray
      • from WebExhibits, history of daylight saving time
      • - an attempt to create a decimalized time system
      • by Steve Allen
      • , information regarding the history of various time-related happenings such as the invention of horological devices to the requirements that NASA used for selecting its space watch
      • , from Phänomen Zeit
      • from National Maritime Museum, Royal Observatory Greenwich
      • by Nicholas Whyte, the transition from astronomical-based time to mechanical clock-based time in 12th and 13th centuries
      • from HowStuffWorks - The origins of timekeeping
      • by Victor Toth
      • from The WhyFiles, timekeeping accuracy
      • , a collection of messages
      • , a collection of messages
      • from the Smithsonian Institution
      • , detailed information by country about the adoption of the Gregorian calendar
      • from Ingrid Hielle / Krupp VDM GmbH (Brief Overview)
      • by Professor George Cupcea
      • - It's About Time. From 3000 BCE to the present.
      • from Scientific American
      • Also see History of Timepieces
    • Measuring Time - Calendar Systems
      • General
      • . Explanations of calendric systems, days, time standards
      • from WebExhibits, past calendars and current calendars
      • - comparison of Calendars
      • by Claus Tøndering
      • from Polysyllabic
      • Asian
      • from indo.com
      • from Calendopedia
      • from Wikipedia, the free encyclopedia.
      • European
      • from World Historia
      • from Wikia
      • from Wikia
      • by Claus Tøndering
      • from Wolfram
      • from Polysyllabic
      • of the city-states of ancient Greece and the eastern Mediterranean
      • from Wikia
      • ▪ video ▪
      • from Wolfram
      • from Polysyllabic
      • , Mores
      • from Wikia
      • from Wikia
      • from Wikia
      • Middle-Eastern/African
      • from Wikia
      • from Wikia
      • from Polysyllabic
      • from Wikia
      • from WikiVisually
      • from Polysyllabic
      • from Wolfram
      • from Afropede@
      • from Wikia
      • from Wolfram
      • from Wikia
      • by Claus Tøndering
      • by Kazimierz M Borkowski
      • from Wikia
      • from Wild Coast
      • American
      • from World Mysteries
      • by Dale Hoyt Palfrey
      • by Claus Tøndering
      • from ThoughtCo.
      • , the Long Count, Haab, and Tzolkin calendars
      • , conversion from Mayan to Gregorian
      • Religious
      • from the Wilmette Institute
      • from Buddhanet
      • from Astral Traveler
      • from Polysyllabic
      • from timeanddate.com
      • by Claus Tøndering
      • from Islam Finder
      • from Polysyllabic
      • by Claus Tøndering
      • from Wolfram
      • from ThoughtCo.
      • from Wikia
      • from Islamic Finder
      • by Claus Tøndering
      • from Wolfram
      • from Polysyllabic
      • from Polysyllabic
      • - a bit about the Julian and Gregorian Calendars. And interesting explanation of early English dating.
      • according to the Novus Ordo Missae
      • Also see Calendar Conversion Applications for programs, websites, and applets that convert between calendar systems
      • Also see Software page for printable calendars
    • Calendar Conversion Applications
      • Date Conversion
      • online
      • by Karl T Hagen
      • Date Conversion
      • allows users to interconvert any dates using any combination of multiple calendar systems
      • by Peter Binkley
      • , convert any date betwen calendar systems
      • by Maxim V Kollegov, convert Julian calendar dates to Gregorian calendar dates and conversely
    • Measuring Time - Time Zones
      • .
      • , converts current time to any time zone
      • , National Institute of Standards and Technology
      • World Time Zone Map from the National Institute of Standards and Technology ( NIST )
    • Measuring Time - Sunrise / Sunset
      • from The Old Farmer's Almanac, also planets
      • from the U.S. Naval Observatory
      • from the National Oceanic & Atmospheric Administration
      • for major cities, includes a printable custom sunrise and sunset calendar
      • from StarDate

    Development of Time Calendar Systems Calendar Apps Time Zones Sunrise/Sunset Top