People Telling Time Throughout the Ages By Kdelaflor 3000 BCE Used a shadow cast by the sun. 300 BCE Started using a sundial 300 BCE Early Greeks and Egyptians created a water clock. Dec 24, 1050 Hourglass (11th Century) Dec 24, 1300 The first Mechanical clocks were found in Europe. Dec 24, 1410 The first watches (early 1400s) Dec 24, 1600 In Europe, scientists developed a pendulum. (1600s) Dec 24, 1880 International Date Line (early 1880s) Dec 24, 1884 Greenwich Mean Time - The prime meridian passed through Greenwich, England. Dec 24, 1904 Standard Time was invented Dec 24, 1916 The idea to save daylight was introduced. Jan 1, 1972 Universal Time Coordinate