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Various Ways to Tell Time Throughout Time

By darla817
  • 3000 BCE

    Water Clock

    Water Clock
    Early Greeks and Egyptians
  • 3000 BCE

    Obelisk

    Obelisk
    Egyptians
  • 1100 BCE

    Hourglass

    Hourglass
    11th Century Europe
  • 1000 BCE

    Burning Rope Candle

    Burning Rope Candle
    Ancient China
  • 300 BCE

    Sundial

    Sundial
    Babylonia
  • 1300

    Mechanical Clocks

    Mechanical Clocks
    Europe
  • 1400

    Coiled Spring Watch

    Coiled Spring Watch
    Italy

  • Pendulum

    Pendulum
    Europe

  • International Date Line Established

    International Date Line Established
    "The International Date Line serves as the "line of demarcation" between two consecutive calendar dates." (https://oceanservice.noaa.gov/facts/international-date-line.html)

  • Greenwich Mean Time (GMT)

    Greenwich Mean Time (GMT)
    Greenwich Mean Time or GMT is the clock time at the Royal Observatory in Greenwich, London. It is the same all year round and is not affected by Summer Time or Daylight Saving Time. When the sun is at its highest point exactly above the Prime Meridian, it is 1200 noon at Greenwich. (https://greenwichmeantime.com/what-is-gmt/)

  • Daylight Savings Time

    Daylight Savings Time
    First introduced in 1916, around the time of World War 1, as a way of reducing energy consumption because it maximizes the use of daylight, therefore minimizing electricity use for heat and lighting. (NAMC World History Manual pg. 33)

  • Universal Time Coordinate (UTC)

    Universal Time Coordinate (UTC)